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 (32641)
The access control in CemiPark software stores integration (e.g. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The access control in CemiPark software does not properly validate user-entered data, which allows the authentication bypass. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing authorization in PostgreSQL built-in views pg_stats_ext and pg_stats_ext_exprs allows an unprivileged database user to read most common values and other statistics from CREATE STATISTICS. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The White Label CMS plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the reset_plugin function in all versions up to, and including, 2.7.3. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
This vulnerability exists in Digisol Router (DG-GR1321: Hardware version 3.7L; Firmware version : v3.2.02) due to lack of encryption or hashing in storing of passwords within the router's firmware/. Rated medium severity (CVSS 5.4), this vulnerability is no authentication required. No vendor patch available.
Improper Authentication vulnerability in Snow Software AB Snow License Manager on Windows allows a networked attacker to perform an Authentication Bypass if Active Directory Authentication is. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Swift Framework plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the sf_edit_directory_item() function 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 Swift Performance Lite plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the ajax_handler() function in all versions up to, and including, 2.3.6.18. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
YMS VIS Pro is an information system for veterinary and food administration, veterinarians and farm. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
CreateWiki is Miraheze's MediaWiki extension for requesting & creating wikis. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
WOWS Karma is a reputation system for Wargaming's World of Warships. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
TOTOLINK CP450 V4.1.0cu.747_B20191224 was discovered to contain a vulnerability in the SetTelnetCfg function, which allows attackers to log in through telnet. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
TOTOLINK CP450 v4.1.0cu.747_B20191224 was discovered to contain a hardcoded password vulnerability in /etc/shadow.sample, which allows attackers to log in as root. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Missing Authorization vulnerability in ThemeLocation Custom WooCommerce Checkout Fields Editor.3.0. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Eric Alli Google Typography.1.2. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in codename065 Sliding Widgets allows Cross-Site Scripting (XSS).5.0. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Globitel KSA SpeechLog v8.1 was discovered to contain an Insecure Direct Object Reference (IDOR) via the userID parameter. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in AppPresser Team AppPresser.3.0. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue regarding missing authentication for certain utilities exists in CyberPower PowerPanel Enterprise prior to v2.8.3. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
SAP Enable Now Manager does not perform necessary authorization checks for an authenticated user, resulting in escalation of privileges. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Woo product importer Sharkdropship dropshipping for Aliexpress, eBay, Amazon, etsy.1.1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in WP Club Manager WP Club Manager wp-club-manager.2.11. 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 WPDeveloper SchedulePress.0.8. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Podlove Podlove Podcast Publisher.0.14. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a hardcoded password for root at /etc/shadow.sample. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
DataEase is an open source data visualization analysis tool. 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.
The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.6.8's access control mechanism fails to properly restrict access to its settings, permitting any users that can access a menu to. Rated medium severity (CVSS 5.9), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.6.8 allows direct access to menus, allowing an authenticated user with subscriber privileges or above, to bypass authorization and. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
A stored Cross-Site Scripting (XSS) vulnerability exists in the parisneo/lollms-webui application due to improper validation of uploaded files in the profile picture upload functionality. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
This issue was addressed with improved checks. 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 memory handling. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed through improved state management. Rated low severity (CVSS 2.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The issue was addressed with improved checks. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with improved validation. Rated low severity (CVSS 2.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An authorization issue was addressed with improved state management. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Claris International has resolved an issue of potentially allowing unauthorized access to records stored in databases hosted on FileMaker Server. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Security vulnerability in HCL Commerce 9.1.12 and 9.1.13 could allow denial of service, disclosure of user personal data, and performing of unauthorized administrative operations. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
The SolarWinds Access Rights Manager was found to contain a hard-coded credential authentication bypass vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
IBM TXSeries for Multiplatforms 8.2 transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The SP Project & Document Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the cdm_save_category AJAX action in all versions up to,. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The SimpleShop plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.10.0. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The SimpleShop plugin for WordPress is vulnerable to unauthorized disconnection from SimpleShop due to a missing capability check on the maybe_disconnect_simpleshop function in all versions up to,. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The ShopLentor (formerly WooLentor) plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the purchased_new_products function in all versions up to,. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Missing Authorization vulnerability could allow attackers to access resources or perform actions without proper authorization checks.
TOTOLINK EX1800T V9.1.0cu.2112_B20220316 has a vulnerability in the apcliEncrypType parameter that allows unauthorized execution of arbitrary commands, allowing an attacker to obtain device. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An origin validation vulnerability exists in BIG-IP APM browser network access VPN client for Windows, macOS and Linux which may allow an attacker to bypass F5 endpoint inspection. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Missing Authorization vulnerability in Tyche Softwares Print Invoice & Delivery Notes for WooCommerce, Tyche Softwares Arconix Shortcodes, Tyche Softwares Arconix FAQ.8.1; Arconix Shortcodes: from. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in appsbd Vitepos.0.1. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in EPROLO EPROLO Dropshipping.7.1. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Repute InfoSystems ARForms Form Builder.6.1. Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in AIpost AI WP Writer.6.5. 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 HappyMonster Happy Addons for Elementor happy-elementor-addons.10.1. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in PressFore Rolo Slider.0.9. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Multi-column Tag Map.0.26. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The SSL Zen WordPress plugin before 4.6.0 does not properly prevent directory listing of the private keys folder, as it only relies on the use of .htaccess to prevent visitors from accessing the. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
The Social Connect plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 1.2. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The PostgreSQL implementation in Brocade SANnav versions before 2.3.0a is vulnerable to an incorrect local authentication flaw. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Database scanning using username and password stores the credentials in plaintext or encoded format within files at the endpoint. Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity. No vendor patch available.
Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. Rated critical severity (CVSS 9.0), this vulnerability is low attack complexity. No vendor patch available.
In onCreate of WifiDialogActivity.java, there is a possible way to bypass the DISALLOW_ADD_WIFI_CONFIG restriction due to a missing permission check. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Missing Authorization vulnerability could allow attackers to access resources or perform actions without proper authorization checks.
In multiple locations, there is a possible notification listener grant to an app running in the work profile due to a logic error in the code. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. This Incorrect Authorization vulnerability could allow attackers to bypass authorization checks to access restricted resources.
In TBD of TBD, there is a possible confusion of OEM and DRM certificates due to improperly used crypto. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
In sendIntentSender of ActivityManagerService.java, there is a possible background activity launch due to a logic error. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
An issue was discovered in GNOME GLib before 2.78.5, and 2.79.x and 2.80.x before 2.80.1. Rated medium severity (CVSS 5.2), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A local privilege escalation (LPE) vulnerability has been identified in Phish Alert Button for Outlook (PAB), specifically within its configuration management functionalities. Rated low severity (CVSS 2.8), this vulnerability is low attack complexity. No vendor patch available.
An Improper Certificate Validation could allow a malicious actor with access to an adjacent network to take control of the system. Rated high severity (CVSS 7.5), this vulnerability is no authentication required. No vendor patch available.
An Improper Access Control could allow a malicious actor authenticated in the API to enable Android Debug Bridge (ADB) and make unsupported changes to the system. Rated low severity (CVSS 2.2), this vulnerability is remotely exploitable. No vendor patch available.
An authenticated user could potentially access metadata for a datasource they are not authorized to view by submitting a targeted REST API request.1.2. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Tilda Publishing.3.23. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An incorrect authentication vulnerability has been found in Socomec Net Vision affecting version 7.20. Rated medium severity (CVSS 6.7), this vulnerability is no authentication required. No vendor patch available.
IDOR vulnerability in Janto Ticketing Software affecting version 4.3r10. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
IDOR vulnerability in Janto Ticketing Software affecting version 4.3r10. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The ClickCease Click Fraud Protection plugin for WordPress is vulnerable to unauthorized access of data due to an improper capability check on the get_settings 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 Edwiser Bridge plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.0.5. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper authorization vulnerability in Samsung Keyboard prior to version One UI 5.1.1 allows physical attackers to partially bypass the factory reset protection. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Improper privilege management vulnerability in Samsung Internet prior to version 25.0.0.41 allows local attackers to bypass protection for cookies. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Authentication bypass vulnerability in Setupwizard prior to SMR May-2024 Release 1 allows physical attackers to skip activation step. Rated medium severity (CVSS 6.6), this vulnerability is low attack complexity. No vendor patch available.
Authentication bypass in bootloader prior to SMR May-2024 Release 1 allows physical attackers to flash arbitrary images. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Improper Authentication vulnerability in Secure Folder prior to SMR May-2024 Release 1 allows physical attackers to access Secure Folder without proper authentication in a specific scenario. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A race condition vulnerability exists in the mintplex-labs/anything-llm repository, specifically within the user invite acceptance process. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Missing Authorization vulnerability in Themesgrove WidgetKit.5.0. 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 Michael Nelson Print My Blog print-my-blog.26.2. 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 Ollybach WPPizza.18.10. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Roxnor Metform metform.8.3. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
DHCP can add routes to a client’s routing table via the classless static route option (121). Rated high severity (CVSS 7.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Missing Authorization vulnerability in AF themes WP Post Author.6.4. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in AF themes WP Post Author.6.4. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in LeadConnector.7. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in A WP Life Video Gallery - Api Gallery, YouTube and Vimeo, Link Gallery.5.3. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in AddonMaster Post Grid Master.4.7. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Quick Facts
- Typical Severity
- CRITICAL
- Category
- auth
- Total CVEs
- 32641