Detections
Analytics

SCA: security update for Authlib (GHSA-8m4g-j4wp-wgcg)

high Tenable Cloud Security Plugin ID 477594

Description

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)

Solution

Update the Authlib library and its related packages to version 1.9.1 or later.

See Also

https://github.com/advisories/GHSA-8m4g-j4wp-wgcg

Plugin Details

Severity: High

ID: 477594

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/27/2026

Updated: 10/27/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.58

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-114616

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/27/2026

Vulnerability Publication Date: 10/22/2026

Reference Information

CVE: CVE-2026-114616