PT-2026-82224

Name of the Vulnerable Software and Affected Versions Stalwart Mail Server affected versions not specified Description In its default configuration, the server fails to validate OAuth redirect targets against registered destinations. The validation routine in...

CVE-2026-79786

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their...

CVE-2026-79786 Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their...

CVE-2026-79786 Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their...

OAuth 2.0 Authorization Code Binding Bypass

org.keycloak, keycloak-services is vulnerable to an OAuth 2.0 authorization code binding bypass. The vulnerability is due to authorization codes not being properly bound to the client that originally requested them, which allows an attacker who intercepts an authorization code to modify and redee...

Server-side Request Forgery (SSRF)

Overview n8n-nodes-base is a Base nodes of n8n Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the OAuth2 authorization-code-to-access-token exchange, which issues its request through a separate HTTP client that lacks the SSRF guard applied to the discovery...

CVE-2026-77069: Server-Side Request Forgery (SSRF)

n8n before 1.123.69, 2.33.4, and 2.34.1 contains an SSRF protection bypass in the OAuth2 credential authorization-code-to-access-token exchange. While OAuth2 discovery and dynamic-client-registration requests use n8n's SSRF-protected HTTP client, the token exchange uses a separate client with no...

ANT-2026-CGR7Y3J8 · supabase/auth · other

other low Severity Claude low · Security research firm - · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-CGR7Y3J8: OAuth authorization code single-use not enforced atomically In the authorizationcode grant handler of the...

Medplum: Improper Validation of Redirect URI in External Auth Callback allows Authorization Code Leakage

Summary The external identity provider callback at GET /auth/external accepts attacker-controlled redirect URIs that only need to start with a registered client redirect URI, rather than matching exactly. After a successful external IdP login, the server appends Medplum login and code values to...

GHSA-M44R-7C5H-M6MJ Medplum: Improper Validation of Redirect URI in External Auth Callback allows Authorization Code Leakage

Summary The external identity provider callback at GET /auth/external accepts attacker-controlled redirect URIs that only need to start with a registered client redirect URI, rather than matching exactly. After a successful external IdP login, the server appends Medplum login and code values to...

PT-2026-76718

Name of the Vulnerable Software and Affected Versions Medplum versions prior to 5.1.6 Description An issue exists in the external identity provider callback at the 'GET /auth/external' endpoint. The system accepts redirect URIs that only need to start with a registered client redirect URI rather...

CVE-2026-73563

Backstage is an open framework for building developer portals. Prior to 0.29.2, the experimental dynamic client registration and client ID metadata document features in the @backstage/plugin-auth-backend use full-string matcher.isMatch glob matching for...

Apache CXF < 3.6.12 / 4.x < 4.1.8 / 4.2.x < 4.2.3 Multiple Vulnerabilities

The version of Apache CXF installed on the remote host is prior to 3.6.12, or 4.x prior to 4.1.8, or 4.2.x prior to 4.2.3. It is, therefore, affected by multiple vulnerabilities, including: - The JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserializatio...

CVE-2026-57817

A flaw was found in Apache CXF. When operating in the OpenID Connect Hybrid Flow, Apache CXF does not enforce the validation of the chash parameter. This vulnerability allows a remote attacker, through a non-compliant or misconfigured Identity Provider IdP, to perform Authorization Code...

CVE-2026-68079

A flaw was found in Apache CXF's DefaultEncryptingCodeDataProvider. This vulnerability allows a remote attacker to redeem a captured authorization code an unlimited number of times. The flaw exists due to an issue in the removeCodeGrant functionality, which fails to properly invalidate used...

CVE-2026-57818

A flaw was found in Apache CXF. A race condition in the JCacheCodeDataProvider allows a remote attacker to redeem a single authorization code multiple times through concurrent requests. This can result in the issuance of multiple distinct, valid access tokens, potentially leading to unauthorized...

Improper Verification of Cryptographic Signature

Overview org.apache.cxf:cxf-rt-rs-security-sso-oidc is an Apache CXF Runtime OpenId Connect library. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the OpenID Connect Hybrid Flow when the chash parameter is not validated. An attacker can...

CVE-2026-68079

In Apache CXF's DefaultEncryptingCodeDataProvider, a captured authorization code can be redeemed an unlimited number of times due to a flaw in the implementation of the removeCodeGrant functionality. This violates the RFC requirement that "The authorization code MUST NOT be used more than once."...

CVE-2026-57818

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

CVE-2026-57818

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...