Authlib is a Python library which builds OAuth and OpenID Connect servers. From 1.3.1 until 1.9.0, OctKey.import_key() checks asymmetric-key markers only at byte zero while Authlib's PEM loaders accept leading whitespace, comments, or a byte-order mark. In deployments that use the documented mixed algorithm registry and already configure verification with PEM or certificate bytes containing such a prefix, an unauthenticated attacker who knows those same public-key bytes can use them as an HMAC secret and forge HS256 tokens with arbitrary identity or authorization claims. This is a bypass of the remediation for CVE-2024-37568. The module-level jwt object reaches OctKey.import_key() in authlib/jose/rfc7518/oct_key.py, where POSSIBLE_UNSAFE_KEYS fails to identify prefixed asymmetric key material. This issue is fixed in version 1.9.0.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Authlib is a Python library which builds OAuth and OpenID Connect servers. From 1.3.1 until 1.9.0,
    OctKey.import_key() checks asymmetric-key markers only at byte zero while Authlib's PEM loaders accept
    leading whitespace, comments, or a byte-order mark. In deployments that use the documented mixed algorithm
    registry and already configure verification with PEM or certificate bytes containing such a prefix, an
    unauthenticated attacker who knows those same public-key bytes can use them as an HMAC secret and forge
    HS256 tokens with arbitrary identity or authorization claims. This is a bypass of the remediation for
    CVE-2024-37568. The module-level jwt object reaches OctKey.import_key() in
    authlib/jose/rfc7518/oct_key.py, where POSSIBLE_UNSAFE_KEYS fails to identify prefixed asymmetric key
    material. This issue is fixed in version 1.9.0. (CVE-2026-114615)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Authlib is a Python library which builds OAuth and OpenID Connect servers. From 1.3.1 until 1.9.0,     OctKey.import_key() checks asymmetric-key markers only at byte zero while Authlib's PEM loaders accept     leading whitespace, comments, or a byte-order mark. In deployments that use the documented mixed algorithm     registry and already configure verification with PEM or certificate bytes containing such a prefix, an     unauthenticated attacker who knows those same public-key bytes can use them as an HMAC secret and forge     HS256 tokens with arbitrary identity or authorization claims. This is a bypass of the remediation for     CVE-2024-37568. The module-level jwt object reaches OctKey.import_key() in     authlib/jose/rfc7518/oct_key.py, where POSSIBLE_UNSAFE_KEYS fails to identify prefixed asymmetric key     material. This issue is fixed in version 1.9.0. (CVE-2026-114615)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
477758	Chainguard: py3.12-airflow-3: security update to 3.3.2-r11	Tenable Cloud Security	Chainguard Local Security Checks	Local	critical
477758	Chainguard: py3.12-airflow-3: security update to 3.3.2-r11	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	critical
477591	SCA: security update for authlib (GHSA-7vr2-2fgp-9w7p)	Tenable Cloud Security	SCA Checks	Local	critical
477591	SCA: security update for authlib (GHSA-7vr2-2fgp-9w7p)	Tenable Self-Hosted Container Security	SCA Checks	Local	critical
371298	Linux Distros Unpatched Vulnerability : CVE-2026-114615	Nessus	Misc.	Local	critical

Detections

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CVE-2026-114615

critical

Tenable Plugins

critical

critical

critical

critical

critical