Authlib 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.

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. 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. (CVE-2026-114616)

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. 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. (CVE-2026-114616)

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

ID	Name	Product	Family	Type	Severity
477887	Chainguard: multiple open-webui packages: security update to 0.12.3-r12	Tenable Cloud Security	Chainguard Local Security Checks	Local	critical
477887	Chainguard: multiple open-webui packages: security update to 0.12.3-r12	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	critical
477594	SCA: security update for Authlib (GHSA-8m4g-j4wp-wgcg)	Tenable Cloud Security	SCA Checks	Local	critical
477594	SCA: security update for Authlib (GHSA-8m4g-j4wp-wgcg)	Tenable Self-Hosted Container Security	SCA Checks	Local	critical
371310	Linux Distros Unpatched Vulnerability : CVE-2026-114616	Nessus	Misc.	Local	critical

Detections

Analytics

CVE-2026-114616

critical

Tenable Plugins

critical

critical

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critical

critical