CVE-2026-114619

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDImplicitGrant.validateauthorizationrequest checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client...

CVE-2026-114617

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDMixin.parseidtoken reads the noncesupported decision from the untrusted ID token being validated and sets the expected nonce to null when that claim is the JSON boolean false. In implicit and hybrid...

CVE-2026-114618

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, the default RFC 7523 JWTBearerGrant.getaudiences returns an empty list, causing JWTBearerGrant.verifyclaims to require only that an aud claim exists without matching the current authorization server. An...

CVE-2026-114619

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDImplicitGrant.validateauthorizationrequest checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client...

CVE-2026-114620 Authlib: Unvalidated request_uri fetch in JWT-secured authorization request (JAR) leading to SSRF

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, Authlib's RFC 9101 JWTAuthenticationRequest passes the unauthenticated, client-controlled requesturi parameter to the abstract getrequestobject hook before applying a destination or registration policy; the...

CVE-2026-114620

The Authlib Python library (prior to version 1.9.0 ) is vulnerable to Server-Side Request Forgery (SSRF) in its RFC 9101 JWT-secured authorization request (JAR) implementation. The root cause is that the JWTAuthenticationRequest class forwards an unauthenticated, client-controlled request_uri par...

CVE-2026-114620 Authlib: Unvalidated request_uri fetch in JWT-secured authorization request (JAR) leading to SSRF

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, Authlib's RFC 9101 JWTAuthenticationRequest passes the unauthenticated, client-controlled requesturi parameter to the abstract getrequestobject hook before applying a destination or registration policy; the...

CVE-2026-114620

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, Authlib's RFC 9101 JWTAuthenticationRequest passes the unauthenticated, client-controlled requesturi parameter to the abstract getrequestobject hook before applying a destination or registration policy; the...

CVE-2026-114619

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDImplicitGrant.validateauthorizationrequest checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client...

CVE-2026-114619 Authlib: OpenID implicit grant checks raw scope instead of allowed scope before issuing ID tokens

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDImplicitGrant.validateauthorizationrequest checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client...

CVE-2026-114619

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDImplicitGrant.validateauthorizationrequest checks the client-controlled raw request.payload.scope for openid after the parent grant has filtered allowed scopes into request.scope. A registered client...

CVE-2026-114618 Authlib: Default JWT bearer grant accepts assertions for the wrong audience

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, the default RFC 7523 JWTBearerGrant.getaudiences returns an empty list, causing JWTBearerGrant.verifyclaims to require only that an aud claim exists without matching the current authorization server. An...

CVE-2026-114618 Authlib: Default JWT bearer grant accepts assertions for the wrong audience

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, the default RFC 7523 JWTBearerGrant.getaudiences returns an empty list, causing JWTBearerGrant.verifyclaims to require only that an aud claim exists without matching the current authorization server. An...

CVE-2026-114618

The Authlib Python library (prior to version 1.9.0 ) is vulnerable due to an insecure default in the RFC 7523 JWTBearerGrant.get_audiences() method. Because this method returns an empty list by default, JWTBearerGrant.verify_claims() only requires the presence of an aud claim without verifying it...

CVE-2026-114618

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, the default RFC 7523 JWTBearerGrant.getaudiences returns an empty list, causing JWTBearerGrant.verifyclaims to require only that an aud claim exists without matching the current authorization server. An...

CVE-2026-114618

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, the default RFC 7523 JWTBearerGrant.getaudiences returns an empty list, causing JWTBearerGrant.verifyclaims to require only that an aud claim exists without matching the current authorization server. An...

CVE-2026-114617

The Authlib Python library, used for building OAuth and OpenID Connect servers, contains a vulnerability in versions prior to 1.9.0 . The OpenIDMixin.parse_id_token() function incorrectly trusts the nonce_supported claim from an untrusted ID token. When this claim is set to false , the library se...

CVE-2026-114617 Authlib: ID token can disable its own nonce validation via the nonce_supported claim

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDMixin.parseidtoken reads the noncesupported decision from the untrusted ID token being validated and sets the expected nonce to null when that claim is the JSON boolean false. In implicit and hybrid...

CVE-2026-114617 Authlib: ID token can disable its own nonce validation via the nonce_supported claim

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDMixin.parseidtoken reads the noncesupported decision from the untrusted ID token being validated and sets the expected nonce to null when that claim is the JSON boolean false. In implicit and hybrid...

CVE-2026-114617 Authlib: ID token can disable its own nonce validation via the nonce_supported claim

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.0, OpenIDMixin.parseidtoken reads the noncesupported decision from the untrusted ID token being validated and sets the expected nonce to null when that claim is the JSON boolean false. In implicit and hybrid...