CVE-2026-67336

CVE-2026-67336 affects better-auth versions before 1.6.11, specifically the oidcProvider and mcp plugins. The root cause is insecure cryptographic defaults that advertise the none algorithm and allow plain PKCE by default. This can enable an attacker to exploit algorithm negotiation to accept uns...

CVE-2026-67336 better-auth before 1.6.11 Insecure Cryptographic Defaults via oidcProvider

better-auth versions before 1.6.11 contain insecure cryptographic defaults in the oidcProvider and mcp plugins that advertise the none algorithm and accept plain PKCE by default. Attackers can exploit algorithm negotiation to accept unsigned tokens or intercept authorization codes when PKCE plain...

Improper Verification of Cryptographic Signature

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 Improper Verification of Cryptographic Signature in the backchannel logout endpoint of the keycloak-services...

SUSE CVE-2026-55075

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 without checking for an existing link...

SUSE CVE-2026-55689

OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated...

CVE-2026-48058 nebula-mesh: Session and OIDC state cookies lack the Secure attribute

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/web/session.go and internal/web/oidc.go set HttpOnly and SameSite=Lax on every cookie but never Secure. A single plaintext request to the origin operator on a LAN, mistyped...

Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.

Summary Poweradmin v4.3.2 uses the attacker-controlled HTTPHOST request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An unauthenticated attacker can poison the redirecturi sent to the Identity Provider,...

Missing Authorization

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 Missing Authorization through the OIDC token introspection endpoint in the keycloak-services component. An...

Improper Validation of Consistency within Input

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 Improper Validation of Consistency within Input during OIDC authentication flow processing. An attacker can...

Missing Authorization

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 Missing Authorization through the Google token exchange flow in the Google Identity Provider token exchange...

BIT-OPENBAO-2025-62513 OpenBao leaks HTTPRawBody in Audit Logs

OpenBao is an open source identity-based secrets management system. In versions 2.2.0 to 2.4.1, OpenBao's audit log experienced a regression wherein raw HTTP bodies used by few endpoints were not correctly redacted HMAC'd. This impacts those using the ACME functionality of PKI, resulting in...

CVE-2026-48032

Hulumi (open-source toolkit for Pulumi) contains a vulnerability in the @hulumi/policies that affects IAM-role policy checks. Before v1.4.0, the policy validators incorrectly handled a JSON array in Principal.Federated, bypassing checks when a role trusts multiple OIDC providers. This could allow...

CVE-2026-54342

In epa4all, prior to version 2026-05-20, an attacker on the network path between epa4all and any backend ePA Aktensystem, Konnektor, IDP, TSS can present a self-signed TLS certificate and intercept the connection. For non-VAU connections Konnektor, IDP, this allows direct read and modification of...

CVE-2026-15612 LOIDC nonce validation bypass

Logto bypasses OIDC nonce validation when the nonce claim is absent from the idtoken, enabling replay of authentication tokens and weakening session-binding...

GHSA-4G5M-C9R5-49XF LiteLLM: Local file read via request-supplied OIDC file references

Impact LiteLLM's /health/testconnection endpoint resolved request-supplied environment and OIDC file references in litellmparams. A proxy administrator, or another privileged caller with permission to test model connections, could cause LiteLLM to read files from the local filesystem via an...

CVE-2026-13089 OIDC::Lite versions through 0.12.1 for Perl allow ID Token signature verification bypass via a token-controlled algorithm allowlist in verify

OIDC::Lite versions through 0.12.1 for Perl allow ID Token signature verification bypass via a token-controlled algorithm allowlist in verify. When the caller does not pin an algorithm, OIDC::Lite::Model::IDToken::verify sets $self-alg$self-header-alg from the token's own header and then calls...

GHSA-MG4F-X9V4-6H2P Gitea: OIDC userinfo Endpoint Returns Identity Claims Without Enforcing API Token Scopes

Summary The OIDC userinfo endpoint GET /login/oauth/userinfo accepts Gitea API tokens as bearer credentials but does not enforce API token scopes before returning identity claims. A personal access token scoped only to read:misc can successfully retrieve user information from the OIDC userinfo...

GHSA-X77V-Q46J-393G Gitea: Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Summary When oauth2client UPDATEAVATAR = true is enabled, Gitea fetches the avatar URL received from an OAuth2/OIDC provider using Go's default HTTP client. The URL comes from the user's OAuth/OIDC avatar value, commonly the OIDC picture claim. The affected code path calls http.Geturl without...

Gitea: Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Summary When oauth2client UPDATEAVATAR = true is enabled, Gitea fetches the avatar URL received from an OAuth2/OIDC provider using Go's default HTTP client. The URL comes from the user's OAuth/OIDC avatar value, commonly the OIDC picture claim. The affected code path calls http.Geturl without...

Information Exposure

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 Information Exposure through the OIDCClientSecretConfigWrapper in...