EUVD-2026-42610

n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution...

NPM: n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

NPM: n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution vulnerability discovered by ? in WordPress Npm n8n versions 2.27.4...

n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

Impact When an n8n instance is configured with more than one trusted token-exchange issuer, external identities are resolved to local accounts using only the JWT sub claim, ignoring the issuer iss. As a result, two different issuers that emit the same subject value map to the same local account. ...

GHSA-MQ3M-F8X3-579W n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

Impact When an n8n instance is configured with more than one trusted token-exchange issuer, external identities are resolved to local accounts using only the JWT sub claim, ignoring the issuer iss. As a result, two different issuers that emit the same subject value map to the same local account. ...

CVE-2026-49998 Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not...

CVE-2026-49998

CVE-2026-49998 describes a cross-issuer JWT authentication bypass in Centrifugo prior to v6.8.1 caused by the JWKS cache and singleflight lookup being keyed only by the JWT header kid. The JWKS URL is resolved later from tokenVars to a per-tenant endpoint, but caches (and TTL) and the in-flight f...

CVE-2026-49998 Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not...

CVE-2026-49998 Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not...

Exploit for CVE-2026-50338

CVE-2026-50338 Spring Cloud Azure B2C Resource Server Cross-I...

User Impersonation

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to User Impersonation via the token-exchange identity-resolution service in packages/cli/src/modules/token-exchange/services/identity-resolution.service.ts. An attacker can authenticate as another user...

CVE-2026-59208

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-59208

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-59208

CVE-2026-59208 affects n8n, an open-source workflow automation platform. Vulnerability: when an n8n instance is configured with more than one trusted token-exchange issuer, it could resolve external identities to local accounts using only the JWT sub claim and ignore the iss claim. This allows an...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

CVE-2026-59208 n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacke...

GO-2026-5872 Centrifugo's dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass in github.com/centrifugal/centrifugo

Centrifugo's dynamic JWKS key cache keyed only by kid allows cross-issuer JWT authentication bypass in github.com/centrifugal/centrifugo...

GHSA-G6VG-WJ8F-48CJ Centrifugo's dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass

Summary Centrifugo's dynamic JWKS endpoint feature can verify a JWT for one allowed issuer using a public key cached from another allowed issuer. The JWKS cache and singleflight lookup are keyed only by the JWT header kid, not by the resolved JWKS endpoint, issuer, audience, or other trust-domain...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the JWKS key caching process. An attacker can gain unauthorized access to another issuer or tenant's resources by crafting a valid token for one allowed issuer and exploiting the cache...

Centrifugo's dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass

Summary Centrifugo's dynamic JWKS endpoint feature can verify a JWT for one allowed issuer using a public key cached from another allowed issuer. The JWKS cache and singleflight lookup are keyed only by the JWT header kid, not by the resolved JWKS endpoint, issuer, audience, or other trust-domain...