Weakness (CWE)
CWE-289: Authentication Bypass by Alternate Name
The product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor.
How to prevent it (3 mitigations)
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Architecture and Design
Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
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Implementation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
Source: MITRE CWE-289
54 results · Feed
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High 7.4
kin-openapi: ValidationHandler security-requirement bypass via encoded-path operation confusion
kin-openapi is a Go project for handling OpenAPI files. From 0.144.0 until 0.147.0, openapi3filter.ValidationHandler validates an operation selected from decoded URL.Path while a downstream gorilla/mux router configured with UseEncodedPath can dispatch a diff…
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High 8.7
DataEase: Stored SQL Injection via dateFormat field templates
DataEase is an open source data visualization and analysis tool. Prior to 2.10.26, authenticated users can store a crafted custom dateFormat for a dataset field. DatasetTableFieldDTO.dateFormat is inserted without validation into date conversion templates use…
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Medium 6.8
social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the Vend OAuth2 backend used only the numeric Vend user_id as the social-auth UID. When multiple Vend shops authenticate through the same application, users from dif…
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Medium 5.3
WordPress Netgsm plugin <= 2.10.0 - Bypass Vulnerability vulnerability
Unauthenticated Bypass Vulnerability in Netgsm <= 2.10.0 versions.
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Critical 9.8CVE-2026-76183 Public exploit
Apache Tomcat: Bypass of security constraints for WebSocket endpoints
Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 …
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Medium 5.3
Envoy: Potential path-matching/authentication bypass when using Envoy in combination with a backend stripping per-segment path (matrix) parameters (e.g. Apache Tomcat)
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy normally matches the raw request path, while servlet backends such as Apache Tomcat strip semicolon matrix parameters fr…
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Medium 5.4
AVideo through 29.0 Broken Access Control via CSRF Exemption Basename Collision
In AVideo through 29.0, the autoCSRFGuard() function maintains a hardcoded allowlist of exempt basenames tested without directory context, allowing plugin files matching core filenames to inherit CSRF exemptions. The LoginWordPress plugin file login.json.php …
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High 8.1
Security vulnerabilities have been addressed in IBM Verify Identity Access and IBM Security Verify Access
IBM Verify Identity Access could allow an administrator to execute additional commands they are not entitled to due to improper validation of user supplied requests.
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Critical 9.8
MyHome Core <= 4.4.5 - Authentication Bypass to Account Takeover via Activation Token
The MyHome Core plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 4.4.5. This is due to missing authorization in the send_link() AJAX handler and improper token validation in the activate() function. This makes …
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Medium 6.8
Winter: Broken access control in `Cms\Controllers\Index` allows cross-template actions and unauthorized asset uploads
Winter CMS is a content management system built on the Laravel PHP framework. In versions up to and including 1.2.12, the CMS section's Theme Editor AJAX handlers did not enforce per-template-type permission checks, allowing a backend user with any single CMS…
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High 8.1
Classified Listing - Mobile Number Verification <= 1.6.0 - Unauthenticated Authentication Bypass via Firebase OTP Login
The Classified Listing - Mobile Number Verification plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.6.0. This is due to missing server-side Firebase OTP validation in the process_otp_login() function. This m…
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Critical 9.8
WooCommerce - Social Login <= 2.8.7 - Unauthenticated Authentication Bypass via Forged Apple 'id_token' JWT
The WooCommerce - Social Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to and including 2.8.7. This is due to the plugin's Apple login handler accepting the Apple id_token and decoding only its base64 payload without ver…
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High 7.5
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a security bypass vulnerability
IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 Traditional and Liberty could allow a remote attacker to bypass security constraints.
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Critical 9.8
Eventer <= 4.4.2 - Insecure Password Reset Mechanism to Unauthenticated Privilege Escalation
The Eventer plugin for WordPress is vulnerable to an insecure password reset mechanism in all versions up to, and including, 4.4.2. The plugin stores a plaintext copy of the password reset key in the `eventer_verification_code` user meta field when a user req…
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High 7.4
Coder vulnerable to OIDC account takeover via email-based user matching and email_verified bypass
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, two flaws in Coder's OIDC login chained into account takeover. Email-based user matching fell back to linking by email…
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High 7.7
A flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth…
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High 8.2
Apache Shiro: Authentication bypass in Guice-Web integration
When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , …
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High 7.8
Traefik: HTTP/3 mTLS bypass via exact SNI TLSOptions lookup for wildcard and mixed-case hosts
Traefik is an HTTP reverse proxy and load balancer. Versions prior to 3.7.3, 3.6.18, and 2.11.51 have a critical vulnerability in Traefik's HTTP/3 (QUIC) TLS configuration selection that allows unauthenticated clients to bypass router-specific mTLS enforcemen…
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Critical 9.1
Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator
The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading t…
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High 8.6CVE-2026-44492 EPSS 12%
Axios: shouldBypassProxy does not recognize IPv4-mapped IPv6 addresses, allowing NO_PROXY bypass (incomplete fix for CVE-2025-62718)
Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, Axios does not normalise IPv4-mapped IPv6 addresses. When NO_PROXY lists an IPv4 address such as 127.0.0.1 or 169.254.169.254, a request URL using the IPv4-mapped IP…
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Medium 4.8
Rsync < 3.4.3 Authorization Bypass via Hostname Resolution
Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for thei…
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High 7.8
Traefik: Forwarded alias spoofing top pre-auth decision bypass
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-heade…
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Low 3.7
Util-linux: util-linux: access control bypass due to improper hostname canonicalization
A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially …
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Medium 4.3
OpenClaw < 2026.3.8 - Sender Allowlist Bypass in Microsoft Teams Plugin via Route Allowlist Configuration
OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks. When a team/channel route allowlist is configured with an empty groupAllowFrom pa…
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Medium 6.5
OpenClaw < 2026.2.26- Authentication Bypass via Encoded Dot-Segment Traversal in /api/channels
OpenClaw gateway plugin versions prior to 2026.2.26 contain a path traversal vulnerability that allows remote attackers to bypass route authentication checks by manipulating /api/channels paths with encoded dot-segment traversal sequences. Attackers can craft…
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Medium 5.3
Apache Shiro: Auth bypass when accessing static files only on case-insensitive filesystems
Authentication Bypass by Alternate Name vulnerability in Apache Shiro. This issue affects Apache Shiro: before 2.0.7. Users are recommended to upgrade to version 2.0.7, which fixes the issue. The issue only effects static files. If static files are served fro…
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High 8.1
Soft Serve has Critical Authentication Bypass
Soft Serve is a self-hostable Git server for the command line. Versions 0.11.2 and below have a critical authentication bypass vulnerability that allows an attacker to impersonate any user (including admin) by "offering" the victim's public key during the SSH…
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High 7.1CVE-2025-55130 Public exploit
A flaw in Node.js’s Permissions model allows attackers to bypass `--allow-fs-read` and `--allow-fs-write` restrictions …
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Medium 6.0
Keycloak: keycloak idor in realm client creating/deleting
A flaw was found in Keycloak. An IDOR (Broken Access Control) vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the re…
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Critical 9.8
Elated Membership <= 1.2 - Authentication Bypass via Social Login
The Elated Membership plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.2. This is due to the plugin not properly logging in a user with the data that was previously verified through the 'eltdf_membership_chec…
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Medium 4.8
authentik deactivated service accounts can authenticate to OAuth
authentik is an open-source Identity Provider. Prior to versions 2025.8.5 and 2025.10.2, when authenticating with client_id and client_secret to an OAuth provider, authentik creates a service account for the provider. In previous authentik versions, authentic…
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High 7.8
(conda) Constructor: Excessive permissions during and after installation
(conda) Constructor is a tool that enables users to create installers for conda package collections. In versions 3.12.2 and below, the installation directory inherits permissions from its parent directory. Outside of restricted directories, the permissions ar…
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High 7.3CVE-2025-60375 Public exploit
The authentication mechanism in Perfex CRM before 3.3.1 allows attackers to bypass login credentials due to insufficien…
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High 7.5
CVE-2025-41248: Spring Security authorization bypass for method security annotations on parameterized types
The Spring Security annotation detection mechanism may not correctly resolve annotations on methods within type hierarchies with a parameterized super type with unbounded generics. This can be an issue when using @PreAuthorize and other method security annota…
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Medium 5.9
Cryostat: authentication bypass if network policies are disabled
A vulnerability was found in the Cryostat HTTP API. Cryostat's HTTP API binds to all network interfaces, allowing possible external visibility and access to the API port if Network Policies are disabled, allowing an unauthenticated, malicious attacker to jeop…
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Critical 9.6
Unraid 7.0.0 before 7.0.1 allows remote users to access the Unraid WebGUI and web console as root without authenticatio…
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High 7.5
WP JobHunt <= 7.1 - Authentication Bypass to Candidate
The WP JobHunt plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 7.1. This is due to wp_ajax_google_api_login_callback function not properly verifying a user's identity prior to authenticating them. This makes i…
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Critical 9.3CVE-2024-56511 EPSS 50%
DataEase has an unauthorized vulnerability
DataEase is an open source data visualization analysis tool. Prior to 2.10.4, there is a flaw in the authentication in the io.dataease.auth.filter.TokenFilter class, which can be bypassed and cause the risk of unauthorized access. In the io.dataease.auth.filt…
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High 8.1
Drupal core - Moderately critical - Access bypass - SA-CORE-2024-004
A vulnerability in Drupal Core allows Privilege Escalation.This issue affects Drupal Core: from 8.0.0 before 10.2.11, from 10.3.0 before 10.3.9, from 11.0.0 before 11.0.8.
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Medium 5.4
Moodle: lesson activity password bypass through php loose comparison
A flaw was found in Moodle. When restricting access to a lesson activity with a password, certain passwords could be bypassed or less secure due to a loose comparison in the password-checking logic. This issue only affected passwords set to "magic hash" value…