Authentication Bypass
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
How It Works
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications. Instead of cracking passwords through brute force, attackers manipulate the authentication process itself to gain unauthorized entry. This typically occurs through one of several pathways: exploiting hardcoded credentials embedded in source code or configuration files, manipulating parameters in authentication requests to skip verification steps, or leveraging broken session management that fails to properly validate user identity.
The attack flow often begins with reconnaissance to identify authentication endpoints and their underlying logic. Attackers may probe for default administrative credentials that were never changed, test whether certain URL paths bypass login requirements entirely, or intercept and modify authentication tokens to escalate privileges. In multi-step authentication processes, flaws in state management can allow attackers to complete only partial verification steps while still gaining full access.
More sophisticated variants exploit single sign-on (SSO) or OAuth implementations where misconfigurations in trust relationships allow attackers to forge authentication assertions. Parameter tampering—such as changing a "role=user" field to "role=admin" in a request—can trick poorly designed systems into granting elevated access without proper verification.
Impact
- Complete account takeover — attackers gain full control of user accounts, including administrative accounts, without knowing legitimate credentials
- Unauthorized data access — ability to view, modify, or exfiltrate sensitive information including customer data, financial records, and intellectual property
- System-wide compromise — admin-level access enables installation of backdoors, modification of security controls, and complete infrastructure takeover
- Lateral movement — bypassed authentication provides a foothold for moving deeper into networks and accessing additional systems
- Compliance violations — unauthorized access triggers breach notification requirements and regulatory penalties
Real-World Examples
CrushFTP suffered a critical authentication bypass allowing attackers to access file-sharing functionality without any credentials. The vulnerability enabled direct server-side template injection, leading to remote code execution on affected systems. Attackers actively exploited this in the wild to establish persistent access to enterprise file servers.
Palo Alto's Expedition migration tool contained a flaw permitting attackers to reset administrative credentials without authentication. This allowed complete takeover of the migration environment, potentially exposing network configurations and security policies being transferred between systems.
SolarWinds Web Help Desk (CVE-2024-28987) shipped with hardcoded internal credentials that could not be changed through normal administrative functions. Attackers discovering these credentials gained full administrative access to helpdesk systems containing sensitive organizational information and user data.
Mitigation
- Implement multi-factor authentication (MFA) — requires attackers to compromise additional verification factors beyond bypassed primary authentication
- Eliminate hardcoded credentials — use secure credential management systems and rotate all default credentials during deployment
- Enforce authentication on all endpoints — verify every request requires valid authentication; no "hidden" administrative paths should exist
- Implement proper session management — use cryptographically secure session tokens, validate on server-side, enforce timeout policies
- Apply principle of least privilege — limit damage by ensuring even authenticated users only access necessary resources
- Regular security testing — conduct penetration testing specifically targeting authentication logic and flows
Recent CVEs (7699)
An issue was discovered in AnyDesk through 9.0.4. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An issue was discovered in AnyDesk for Windows before 9.0.6 and AnyDesk for Android before 8.0.0. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Improper access control in Devolutions allows a View-only user to retrieve sensitive third-level nested fields, such as password lists custom values, resulting in password disclosure.3.2.0 through. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in anibalwainstein Effect Maker effect-maker allows Exploiting Incorrectly Configured Access Control Security Levels.2.1. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Authentication Bypass Using an Alternate Path or Channel vulnerability in Elated-Themes Search & Go search-and-go allows Password Recovery Exploitation.7. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Stylemix Cost Calculator Builder cost-calculator-builder.5.32. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in CodexThemes TheGem Demo Import (for WPBakery) thegem-importer.10.5. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in uxper Togo togo.0.4. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in uxper Togo togo.0.4. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in ThemeNectar Salient salient.4.0. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in hogash Kallyas kallyas.22.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in hogash Kallyas kallyas.22.0. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Bux Bux Woocommerce bux-woocommerce allows Accessing Functionality Not Properly Constrained by ACLs.2.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Missing Authorization vulnerability in e4jvikwp VikBooking Hotel Booking Engine & PMS vikbooking.8.2. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in ganddser Jock On Air Now (JOAN) joan allows Exploiting Incorrectly Configured Access Control Security Levels.0.4. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in kamleshyadav Miraculous miraculous allows Exploiting Incorrectly Configured Access Control Security Levels.0.9. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Authorization Bypass Through User-Controlled Key vulnerability in kamleshyadav Miraculous Core Plugin miraculouscore allows Exploiting Incorrectly Configured Access Control Security Levels.0.9. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Authentication Bypass by Spoofing vulnerability in Saad Iqbal All In One Login change-wp-admin-login allows Identity Spoofing.0.8. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Jthemes imEvent imevent allows Accessing Functionality Not Properly Constrained by ACLs.4.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in WP Messiah Ai Image Alt Text Generator for WP ai-image-alt-text-generator-for-wp allows Exploiting Incorrectly Configured Access Control Security Levels.1.5. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in bPlugins Info Cards info-cards allows Accessing Functionality Not Properly Constrained by ACLs.0.11. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Gaurav Aggarwal Backup and Move backup-and-move allows Exploiting Incorrectly Configured Access Control Security Levels.1. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in sertifier Sertifier Certificate & Badge Maker sertifier-certificates-open-badges allows Exploiting Incorrectly Configured Access Control Security Levels.21. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in bPlugins Image Gallery block - Create and display photo gallery/photo album. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in flippercode Advanced Google Maps wp-google-map-gold allows Exploiting Incorrectly Configured Access Control Security Levels.8.4. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Better Find and Replace - AI-Powered Suggestions plugin for WordPress is vulnerable to unauthorized API usage due to a missing capability check on the rtafar_ajax() function in all versions up. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to limited file upload due to an incorrect capability check on theuploadVideo() function in all versions up to,. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Easy Digital Downloads plugin for WordPress is vulnerable to Order Manipulation in all versions up to, and including, 3.5.2 due to an order verification bypass. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
MARIN3R is a lightweight, CRD based envoy control plane for kubernetes. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the XiaozhangBang Voluntary Like System V8.8 allows remote attackers to manipulate the zhekou parameter in the /topfirst.php Pay module, enabling unauthorized discounts. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
This issue was addressed by restricting options offered on a locked device. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Tonec Internet Download Manager 6.42.41.1 and earlier suffers from Missing SSL Certificate Validation, which allows attackers to bypass update protections. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
DWSurvey 6.14.0 is vulnerable to Incorrect Access Control. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Dell CloudLink, versions 8.0 through 8.1.2, contain vulnerability on restricted shell. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability in the Contact Center Express (CCX) Editor application of Cisco Unified CCX could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative. Rated critical severity (CVSS 9.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the Java Remote Method Invocation (RMI) process of Cisco Unified CCX could allow an unauthenticated, remote attacker to upload arbitrary files and execute arbitrary commands with. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An Incorrect Access Control vulnerability in the user management component of ZwiiCMS up to v13.6.07 allows a remote, authenticated attacker to escalate their privileges. Rated high severity (CVSS 8.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An attacker with a valid read-only account can bypass Doris MCP Server’s read-only mode due to improper access control, allowing modifications that should have been prevented by read-only. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The FunnelKit Automations - Email Marketing Automation and CRM for WordPress & WooCommerce plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.6.4.1. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity.
The Control-M/Agent is vulnerable to unauthenticated remote code execution, arbitrary file read and write and similar unauthorized actions when mutual SSL/TLS authentication is not enabled (i.e. Rated critical severity (CVSS 9.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The KiotViet Sync plugin for WordPress is vulnerable to authorizarion bypass in all versions up to, and including, 1.8.5. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The KiotViet Sync plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the saveConfig() function in all versions up to, and including, 1.8.5. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Document Embedder - Embed PDFs, Word, Excel, and Other Files plugin for WordPress is vulnerable to unauthorized access/modification/loss of data in all versions up to, and including, 2.0.0. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Popup and Slider Builder by Depicter - Add Email collecting Popup, Popup Modal, Coupon Popup, Image Slider, Carousel Slider, Post Slider Carousel plugin for WordPress is vulnerable to arbitrary. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Paid Membership Subscriptions - Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to unauthorized modification of data due to a missing. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Features plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'features_revert_option AJAX endpoint in all versions up to, and. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Cursor is a code editor built for programming with AI. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
The Survision LPR Camera system does not enforce password protection by default. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Radiometrics VizAir is vulnerable to a lack of authentication mechanisms for critical functions, such as admin access and API requests. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Radiometrics VizAir is vulnerable to any remote attacker via access to the admin panel of the VizAir system without authentication. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
WorkDo HRM SaaS HR and Payroll Tool 8.1 is affected vulnerable to Insecure Permissions. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An Insecure Direct Object Reference (IDOR) vulnerability exists in the vehicleId parameter, allowing unauthorized access to sensitive information of other users’ vehicles. Rated high severity (CVSS 8.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In preloader, there is a possible escalation of privilege due to an insecure default value. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
The Import Export For WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the update_setting() function in all versions up to, and. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The DominoKit plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the wp_ajax_nopriv_dominokit_option_admin_action AJAX endpoint in all versions up to, and. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Simple User Capabilities plugin for WordPress is vulnerable to Privilege Escalation due to a missing capability check on the suc_submit_capabilities() function in all versions up to, and. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Simple User Capabilities plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'wp_ajax_nopriv_reset_capability' AJAX endpoint in all. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Ai Auto Tool Content Writing Assistant (Gemini Writer, ChatGPT ) All in One plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Crypto Payment Gateway with Payeer for WooCommerce plugin for WordPress is vulnerable to payment bypass in all versions up to, and including, 1.0.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The All in One Time Clock Lite plugin for WordPress is vulnerable to unauthorized access due to a missing authorization check in all versions up to, and including, 2.0.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Multiple plugins for WordPress with the Jewel Theme Recommended Plugins Library are vulnerable to Unrestricted Upload of File with Dangerous Type via arbitrary plugin installation in all versions up. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Information Disclosure when a user-level driver performs QFPROM read or write operations on Fuse regions. Rated high severity (CVSS 8.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The CE21 Suite plugin for WordPress is vulnerable to unauthorized plugin settings update due to a missing capability check on the wp_ajax_nopriv_ce21_single_sign_on_save_api_settings AJAX action in. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An inconsistent user interface issue was addressed with improved state management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A privacy issue was addressed by removing sensitive data. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with additional entitlement checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An authorization issue was addressed with improved state management. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The issue was addressed with improved checks. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved checks. Rated medium severity (CVSS 5.2), this vulnerability is low attack complexity. No vendor patch available.
A privacy issue was addressed with improved private data redaction for log entries. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An authentication issue was addressed with improved state management. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed through improved state management. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Quick Facts
- Typical Severity
- CRITICAL
- Category
- auth
- Total CVEs
- 7699