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
23 results · Clear filters · 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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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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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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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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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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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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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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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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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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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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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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High 7.5CVE-2024-51996 Public exploit
Symphony has an Authentication Bypass via RememberMe
Symphony process is a module for the Symphony PHP framework which executes commands in sub-processes. When consuming a persisted remember-me cookie, Symfony does not check if the username persisted in the database matches the username attached with the cookie…
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High 7.5
Download Manager <= 3.2.89 - Improper Authorization via protectMediaLibrary
The Download Manager plugin for WordPress is vulnerable to unauthorized access of data due to an improper authorization check on the 'protectMediaLibrary' function in all versions up to, and including, 3.2.89. This makes it possible for unauthenticated attack…
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High 7.5
Sustainsys.Saml2 Insufficient Identity Provider Issuer Validation
Sustainsys.Saml2 library adds SAML2P support to ASP.NET web sites, allowing the web site to act as a SAML2 Service Provider. Prior to versions 1.0.3 and 2.9.2, when a response is processed, the issuer of the Identity Provider is not sufficiently validated. Th…
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High 7.5
The Dataprobe iBoot PDU running firmware version 1.43.03312023 or earlier is vulnerable to authentication bypass in the…
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High 8.8
A vulnerability in the key-based SSH authentication feature of Cisco StarOS Software could allow an authenticated, remo…