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 (32659)
Missing Authorization vulnerability in BloomPixel Max Addons Pro for Bricks.6.1. 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 Repute Infosystems ARMember.0.28. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
cdbattags lua-resty-jwt 0.2.3 allows attackers to bypass all JWT-parsing signature checks by crafting a JWT with an enc header with the value A256GCM. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Active debug code vulnerability exists in RoamWiFi R10 prior to 4.8.45. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Anssi Laitila Shared Files shared-files.7.16. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Elespare - Build Your Blog, News & Magazine Websites with Expert-Designed Template Kits. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Quick Featured Images plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the set_thumbnail and delete_thumbnail functions in all versions. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A security issue was discovered in Kubernetes where users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using. Rated low severity (CVSS 2.7), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Ant Media Server is live streaming engine software. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Authentication Bypass by Spoofing vulnerability in Apache HugeGraph-Server.0.0 before 1.3.0. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RCE-Remote Command Execution vulnerability in Apache HugeGraph-Server.0.0 before 1.3.0 in Java8 & Java11 Users are recommended to upgrade to version 1.3.0 with Java11 & enable the Auth system, which. 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 issue in Tormach xsTECH CNC Router, PathPilot Controller v2.9.6 allows attackers to overwrite the hardcoded IP address in the device memory, disrupting network connectivity between the router and. Rated medium severity (CVSS 4.4), this vulnerability is remotely exploitable. No vendor patch available.
An issue in Tormach xsTECH CNC Router, PathPilot Controller v2.9.6 allows attackers to cause a Denial of Service (DoS) by disrupting the communication between the PathPilot controller and the CNC. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in Tormach xsTECH CNC Router, PathPilot Controller v2.9.6 allows attackers to erase a critical sector of the flash memory, causing the machine to lose network connectivity and suffer from. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in realmag777 Active Products Tables for WooCommerce.0.6.2. 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 Long Watch Studio MyRewards.3.0. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in WPClever WPC Frequently Bought Together for WooCommerce.0.3. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Wpmet Wp Ultimate Review.2.5. 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 BdThemes Prime Slider - Addons For Elementor.13.2. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in BdThemes Prime Slider - Addons For Elementor.13.2. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An issue was discovered in Italtel Embrace 1.6.4. 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.
Webid v1.2.1 suffers from an Insecure Direct Object Reference (IDOR) - Broken Access Control vulnerability, allowing attackers to buy now an auction that is suspended (horizontal privilege. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Authorization Bypass Through User-Controlled Key vulnerability in Wpmet Wp Ultimate Review.2.5. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Brocade SANnav OVA before v2.3.1 and v2.3.0a contain hard-coded credentials in the documentation that appear as the appliance's root password. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Brocade SANnav OVA before v2.3.1, and v2.3.0a, contain hardcoded TLS keys used by Docker. Rated low severity (CVSS 3.8), this vulnerability is low attack complexity. No vendor patch available.
In Brocade SANnav server before v2.3.1 and v2.3.0a, the SSH keys inside the OVA image are identical in the VM every time SANnav is installed. Rated high severity (CVSS 7.5), this vulnerability is no authentication required. No vendor patch available.
The Poll Maker - Best WordPress Poll Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to a missing capability check on the ays_poll_maker_quick_start AJAX action in. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The device allows an unauthenticated attacker to bypass authentication and modify the cookie to reveal hidden pages that allows more critical operations to the transmitter. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An unauthenticated attacker can reset the board and stop transmitter operations by sending a specially-crafted GET request to the command.cgi gateway, resulting in a denial-of-service scenario. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The devices allow access to an unprotected endpoint that allows MPFS file system binary image upload without authentication. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Electrolink transmitters are vulnerable to an authentication bypass vulnerability affecting the login cookie. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
HCL Connections contains a broken access control vulnerability that may expose sensitive information to unauthorized users in certain scenarios. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Tolgee is an open-source localization platform. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Incorrect Authorization vulnerability could allow attackers to bypass authorization checks to access restricted resources.
Tolgee is an open-source localization platform. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Missing Authorization vulnerability could allow attackers to access resources or perform actions without proper authorization checks.
Missing Authorization vulnerability in GenialSouls WP Social Comments.7.3. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The EAN for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.9.2 via the the 'alg_wc_ean_product_meta' shortcode due to. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity.
Authorization Bypass Through User-Controlled Key vulnerability in Plechev Andrey WP-Recall.26.5. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in WP OnlineSupport, Essential Plugin Popup Anything.8. 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 Ovic Team Ovic Responsive WPBakery.3.0. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Support Genix.2.3. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
ONTAP Select Deploy administration utility versions 9.12.1.x, 9.13.1.x and 9.14.1.x contain hard-coded credentials that could allow an attacker to view Deploy configuration information and modify the. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix fortify source warning while accessing Eth segment ------------[ cut here ]------------ memcpy: detected. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Missing Authorization vulnerability in Undsgn Uncode Core.8.8. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Joris van Montfort JVM rich text icons.2.6. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Layered If Menu.16.3. 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 Prasidhda Malla Honeypot for WP Comment.2.3. 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 Mitchell Bennis Simple File List.1.9. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Incorrect Authorization vulnerability in Supsystic Data Tables Generator.10.25. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Inappropriate implementation in Networks in Google Chrome prior to 124.0.6367.60 allowed a remote attacker to bypass mixed content policy via a crafted HTML page. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Insufficient data validation in Downloads in Google Chrome prior to 124.0.6367.60 allowed a remote attacker to perform UI spoofing via a crafted HTML page. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Missing Authorization vulnerability in SiteGround Speed Optimizer.4.6. 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 Theme My Login.1.6. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Nuggethon Custom Order Statuses for WooCommerce.5.2. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Jaed Mosharraf & Pluginbazar Team Open Close WooCommerce Store.9.1. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in WPClever WPC Grouped Product for WooCommerce.4.2. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in GutenGeek GG Woo Feed for WooCommerce.2.6. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Pepro Dev. 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 WooCommerce & WordPress Tutorials Custom Thank You Page Customize For WooCommerce by Binary Carpenter.4.12. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Palscode Multi Currency For WooCommerce.5.5. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Qamar Sheeraz, Nasir Ahmad Mega Addons For Elementor.8. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Missing Authorization vulnerability in Loopus WP Cost Estimation & Payment Forms Builder.1.76. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in sanluan PublicCMS v.4.0.202302.e allows an attacker to escalate privileges via the change password function. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
OpenFGA is a high-performance and flexible authorization/permission engine. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Incorrect Authorization vulnerability could allow attackers to bypass authorization checks to access restricted resources.
The MSAL library enabled acquisition of security tokens to call protected APIs. Rated low severity (CVSS 3.9), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Core). Rated medium severity (CVSS 5.3), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 7.3), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Utility). Rated low severity (CVSS 2.0), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle Commerce Platform product of Oracle Commerce (component: Platform). Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Security). Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Java VM component of Oracle Database Server. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable. No vendor patch available.
Vulnerability in the Oracle Agile Product Lifecycle Management for Process product of Oracle Supply Chain (component: Product Quality Management). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Agile Product Lifecycle Management for Process product of Oracle Supply Chain (component: Data Import). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Concurrent Processing product of Oracle E-Business Suite (component: Request Submission and Scheduling). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Production Scheduling product of Oracle E-Business Suite (component: Import Utility). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle CRM Technical Foundation product of Oracle E-Business Suite (component: Preferences). Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Service Gateway). Rated medium severity (CVSS 5.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Script Engine). Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Partner Management product of Oracle E-Business Suite (component: Attribute Admin Setup). Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Applications Framework product of Oracle E-Business Suite (component: REST Services). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Marketing product of Oracle E-Business Suite (component: Campaign LOV). 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
- 32659