https://vulnfeed.org/Every disclosure, as it lands. Critical-only feed available.enhttps://vulnfeed.org/cve/CVE-2026-116672/https://vulnfeed.org/cve/CVE-2026-116672/Tue, 27 Oct 2026 17:16:59 +0000Authlib is a Python library which builds OAuth and OpenID Connect servers. From 0.15 until 1.9.1, the documented ClientConfigurationEndpoint.authenticate_client and ClientConfigurationEndpoint.check_permission reference implementations look up a target client from request-controlled client_id data and check only whether that target is editable, without verifying that request.credential belongs to the target client. Deployments following both examples can allow a client holding any valid registration access token to read, modify, or delete another client's registration. Changing redirect_uris can enable authorization code or token interception, while deleting registrations can deny service to affected clients. This issue is fixed in version 1.9.1.https://vulnfeed.org/cve/CVE-2026-114616/https://vulnfeed.org/cve/CVE-2026-114616/Thu, 22 Oct 2026 22:18:04 +0000Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.9.1, Authlib's OctKey.import_key() and HMAC signing and verification path accept zero-length key material. If an application's secret lookup can return an empty string or empty bytes, a remote attacker can compute the deterministic HS256, HS384, or HS512 signature for arbitrary token claims and have Authlib treat the token as authentic. This issue is fixed in version 1.9.1.