GHSA-7VW6-5Q2F-7W5R Keycloak’s OpenID Connect Dynamic Client Registration feature affected by Server-Side Request Forgery (SSRF)

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjwt. The issue allows a client to specify an arbitrary jwksuri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the...

Keycloak’s OpenID Connect Dynamic Client Registration feature affected by Server-Side Request Forgery (SSRF)

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjwt. The issue allows a client to specify an arbitrary jwksuri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the...

Server-side Request Forgery (SSRF)

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the jwksuri parameter in the OpenID Connect Dynamic Client Registration...

CVE-2026-1180 Org.keycloak.protocol.oidc: blind server-side request forgery (ssrf) in keycloak oidc dynamic client registration via jwks_uri

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjwt. The issue allows a client to specify an arbitrary jwksuri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the...

CVE-2026-1180

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjwt. The issue allows a client to specify an arbitrary jwksuri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the...

CVE-2026-1180 Org.keycloak.protocol.oidc: blind server-side request forgery (ssrf) in keycloak oidc dynamic client registration via jwks_uri

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using privatekeyjwt. The issue allows a client to specify an arbitrary jwksuri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the...

Keycloak code issues and vulnerabilities

Keycloak is an open-source identity and access management solution developed by Keycloak itself. Keycloak has code-related vulnerabilities; these vulnerabilities stem from the lack of verification of the jwksuri target, which may lead to information leaks and reconnaissance risks...

GHSA-3VHC-576X-3QV4 Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks "alg" (untrusted header.alg fallback)

Summary A flaw in Hono’s JWK/JWKS JWT verification middleware allowed the algorithm specified in the JWT header to influence signature verification when the selected JWK did not explicitly define an algorithm. This could enable JWT algorithm confusion and, in certain configurations, allow forged...

GHSA-V959-QXV6-6F8P ZITADEL Vulnerable to Account Takeover via DOM-Based XSS in Zitadel V2 Login

Summary A potential vulnerability exists in ZITADEL's logout endpoint in login V2. This endpoint accepts serval parameters including a postlogoutredirect. When this parameter is specified, users will be redirected to the site that is provided via this parameter. ZITADEL's login UI did not ensure...

GHSA-MP85-7MRQ-R866 Envoy crashes when JWT authentication is configured with the remote JWKS fetching

Summary Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allowmissingorfailed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. Details This is caused by a re-entry bug in the JwksFetcherImpl. When the first token's JWKS...

Envoy crashes when JWT authentication is configured with the remote JWKS fetching

Summary Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allowmissingorfailed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. Details This is caused by a re-entry bug in the JwksFetcherImpl. When the first token's JWKS...

CVE-2025-64527 Envoy crashes when JWT authentication is configured with the remote JWKS fetching

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allowmissingorfailed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch...

CVE-2025-64527

Envoy vulnerability CVE-2025-64527: In versions 1.33.12, 1.34.10, 1.35.6, 1.36.2 and earlier, a re-entry bug in JwksFetcherImpl triggers a crash when JWT authentication uses remote JWKS with allow_missing_or_failed and multiple tokens in headers if the JWKS fetch fails. The first token’s JWKS fet...

CVE-2025-64527 Envoy crashes when JWT authentication is configured with the remote JWKS fetching

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allowmissingorfailed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch...

PT-2025-48969

Name of the Vulnerable Software and Affected Versions Envoy versions 1.33.12 through 1.36.2 Description Envoy, a high-performance edge/middle/service proxy, experiences crashes when JWT authentication is configured with remote JWKS fetching enabled, allow missing or failed is set to true, multipl...

EUVD-2020-0463

Malware in sbrugna...

CVE-2025-59936 get-jwks poisoned JWKS cache allows post-fetch issuer validation bypass

get-jwks contains fetch utils for JWKS keys. In versions prior to 11.0.2, a vulnerability in get-jwks can lead to cache poisoning in the JWKS key-fetching mechanism. When the iss issuer claim is validated only after keys are retrieved from the cache, it is possible for cached keys from an...

CVE-2025-59936 get-jwks poisoned JWKS cache allows post-fetch issuer validation bypass

get-jwks contains fetch utils for JWKS keys. In versions prior to 11.0.2, a vulnerability in get-jwks can lead to cache poisoning in the JWKS key-fetching mechanism. When the iss issuer claim is validated only after keys are retrieved from the cache, it is possible for cached keys from an...

CVE-2025-59936

The CVE-2025-59936 issue affects get-jwks prior to 11.0.2, where a design flaw allows cache poisoning of the JWKS cache to bypass issuer validation. If iss is validated after keys are retrieved from the cache, an attacker can craft JWTs to place a chosen public key in the shared cache and then re...

CVE-2025-59936 get-jwks poisoned JWKS cache allows post-fetch issuer validation bypass

get-jwks contains fetch utils for JWKS keys. In versions prior to 11.0.2, a vulnerability in get-jwks can lead to cache poisoning in the JWKS key-fetching mechanism. When the iss issuer claim is validated only after keys are retrieved from the cache, it is possible for cached keys from an...