CVE-2026-35039 fast-jwt Affected by Cache Confusion via cacheKeyBuilder Collisions Can Return Claims From a Different Token (Identity/Authorization Mixup)

fast-jwt provides fast JSON Web Token JWT implementation. From 0.0.1 to before 6.2.0, setting up a custom cacheKeyBuilder method which does not properly create unique keys for different tokens can lead to cache collisions. This could cause tokens to be mis-identified during the verification proce...

CVE-2026-35039

CVE-2026-35039 — fast-jwt cacheKeyBuilder collision leads to identity/authorization mixups Multiple connected sources describe a cache-confusion vulnerability in fast-jwt where a user-supplied cacheKeyBuilder can fail to produce unique keys for different tokens. When caching is enabled, two disti...

CVE-2026-35030

LiteLLM (proxy for LLM APIs) contains an authentication bypass flaw when JWT/OIDC authentication is enabled. The OIDC userinfo cache key is derived from the first 20 characters of the token, allowing an unauthenticated attacker to craft a token whose prefix matches a legitimate user’s cached toke...

CVE-2026-35030 LiteLLM has an authentication bypass via OIDC userinfo cache key collision

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.0, when JWT authentication is enabled enablejwtauth: true, the OIDC userinfo cache uses token:20 as the cache key. JWT headers produced by the same signing algorithm generate identical first 20...

CVE-2026-35030 LiteLLM has an authentication bypass via OIDC userinfo cache key collision

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.0, when JWT authentication is enabled enablejwtauth: true, the OIDC userinfo cache uses token:20 as the cache key. JWT headers produced by the same signing algorithm generate identical first 20...

fast-jwt 安全漏洞

fast-jwt is a JSON Web Token implementation open-sourced by Nearform. Versions of fast-jwt prior to 6.1.0 contained security vulnerabilities. These vulnerabilities stemmed from the incorrect creation of unique keys using the custom cacheKeyBuilder method, which could lead to cache conflicts and...

LiteLLM 授权问题漏洞

LiteLLM is an open-source application developed by Berri AI. It allows for the invocation of all LLM APIs in the OpenAI format. Prior to version 1.83.0, LiteLLM had an authorization vulnerability. This vulnerability stemmed from the use of token:20 as a cache key when JWT authentication was...

Improper Validation of Unsafe Equivalence in Input

Overview fast-jwt is a Fast JSON Web Token implementation Affected versions of this package are vulnerable to Improper Validation of Unsafe Equivalence in Input in the cacheKeyBuilder function when custom implementations do not generate unique keys for different tokens, leading to cache collision...

PT-2026-30016

Name of the Vulnerable Software and Affected Versions fast-jwt affected versions not specified Description The fast-jwt library has a cache confusion vulnerability that can lead to identity or authorization mix-ups. This occurs when a custom cacheKeyBuilder function does not create unique keys fo...

PT-2026-30279

Name of the Vulnerable Software and Affected Versions LiteLLM versions prior to 1.83.0 Description A critical authentication bypass can occur in LiteLLM when JWT authentication is enabled, due to an OIDC userinfo cache key collision. The OIDC userinfo cache uses the first 20 characters of the tok...

CVE-2026-33729

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache...

Improper Input Validation

Overview Affected versions of this package are vulnerable to Improper Input Validation. An attacker can gain unauthorized access to resources by sending specially crafted requests that result in cache key collisions, causing the system to reuse cached authorization results for different requests...

CVE-2026-33729

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache...

CVE-2026-33729

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache...

CVE-2026-33729 OpenFGA has an Authorization Bypass through cached keys

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache...

CVE-2026-33496

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...

CVE-2026-33496 Ory Oathkeeper has an authentication bypass by cache key confusion

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...

CVE-2026-33496

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...

CVE-2026-33496 Ory Oathkeeper has an authentication bypass by cache key confusion

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...

CVE-2026-33496

Overview: CVE-2026-33496 affects ORY Oathkeeper (Identity & Access Proxy) prior to version 26.2.0, where the oauth2_introspection authenticator cache fails to distinguish tokens across different introspection URLs, enabling authentication bypass via cache key confusion. Impact (as described): An ...