PT-2026-53349

Missing JWT signature check GHSL-2022-078 The StatelessTokenService of the DataHub metadata service GMS does not verify the signature of JWT tokens. This allows an attacker to connect to DataHub instances as any user if Metadata Service authentication is enabled. This vulnerability occurs because...

PT-2026-53449

Summary The ExceededSizeError exception messages are embedded with non-decoded JWT token parts and may cause Python logging to record an arbitrarily large, forged JWT payload. Details In situations where a misconfigured — or entirely absent — production-grade web server sits in front of a Python...

PT-2026-53366

When user logged out, the JWT token the user had authtenticated with was not invalidated, which could lead to reuse of that token in case it was intercepted. In Airflow 3.2 we implemented the mechanism that implements token invalidation at logout. Users who are concerned about the logout scenario...

GHSA-WPHV-VFRH-23Q5 joserfc: b64=false RFC7797 JWS payloads bypass JWSRegistry payload-size limits during deserialization

RFC7797 b64=false JWS payloads bypass JWSRegistry payload-size limits during deserialization Summary Testing revealed that joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.maxpayloadlength. The normal JWS compact and flattened JSON paths reject payloads above...

EUVD-2026-39567

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

SUSE SLED15 / SLES15 Security Update : python-PyJWT (SUSE-SU-2026:2626-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2626-1 advisory. This update for python-PyJWT fixes the following issues - CVE-2026-48522: PyJWKClient passes URI arguments...

GO-2026-5732 ZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider in github.com/zitadel/zitadel

ZITADEL: Missing Token Lifecyle Validation exp and iat in JWT IdP Provider in github.com/zitadel/zitadel...

GO-2026-5588 Netmaker does not verify JWT signatures for host tokens in github.com/gravitl/netmaker

Netmaker does not verify JWT signatures for host tokens in github.com/gravitl/netmaker...

GO-2026-5567 Note Mark has a JWT Secret Weakness that allows Full Account Takeover via Token Forgery in github.com/enchant97/note-mark/backend

Note Mark has a JWT Secret Weakness that allows Full Account Takeover via Token Forgery in github.com/enchant97/note-mark/backend...

GO-2026-5480 Portainer: JWT accepted in URL query leaks tokens to logs and referers in github.com/portainer/portainer

Portainer: JWT accepted in URL query leaks tokens to logs and referers in github.com/portainer/portainer. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

CVE-2026-11800

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

GHSA-R9GP-7F88-9R54 Lemur: JWT verifier honors attacker-supplied alg, enabling ATO

Lemur 1.9.0: JWT verifier trusts attacker-supplied alg from token header — defense-in-depth gap; chain-dependent ATO with secret disclosure Vulnerability Summary Field | Value -- | -- Title | Lemur 1.9.0: JWT verifier trusts attacker-supplied alg from token header — defense-in-depth gap;...

Lemur: JWT verifier honors attacker-supplied alg, enabling ATO

Lemur 1.9.0: JWT verifier trusts attacker-supplied alg from token header — defense-in-depth gap; chain-dependent ATO with secret disclosure Vulnerability Summary Field | Value -- | -- Title | Lemur 1.9.0: JWT verifier trusts attacker-supplied alg from token header — defense-in-depth gap;...

CVE-2026-11800

CVE-2026-11800 concerns Keycloak services and describes a JWT algorithm confusion vulnerability in the JWT Authorization Grant flow. The issue allows an attacker with valid client credentials to bypass signature verification by forging an assertion, enabling creation of unauthorized access tokens...

CVE-2026-11800 Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

CVE-2026-11800 Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

CVE-2026-11800

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to...

GO-2026-5291 nuts-node has JWT type confusion in v1 access token introspection that allows VP replay as access token in github.com/nuts-foundation/nuts-node

nuts-node has JWT type confusion in v1 access token introspection that allows VP replay as access token in github.com/nuts-foundation/nuts-node...

GO-2026-5391 ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider in github.com/zitadel/zitadel

ZITADEL: Missing Token Audience Validation aud in JWT IdP Provider in github.com/zitadel/zitadel...

GO-2026-5276 Vikunja: Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade in code.vikunja.io/api

Vikunja: Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing...