Detections
Analytics

SCA: security update for authlib (GHSA-x4rv-c3wx-4cr8)

medium Tenable Self-Hosted Container Security Plugin ID 477590

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 1.9.0, Authlib's RFC
 9101 JWTAuthenticationRequest passes the unauthenticated, client-controlled request_uri parameter to the
 abstract get_request_object() hook before applying a destination or registration policy; the hook itself
 performs no network request, while the documentation demonstrates an unrestricted HTTP fetch. In
 deployments whose integrator implements that hook as an unrestricted outbound fetch, a remote attacker who
 knows a valid public client identifier can make the authorization server request internal, link-local, or
 otherwise unintended URLs and can distinguish fetch outcomes through different error responses and timing.
 Deployments whose custom hook already applies a secure allowlist, destination controls, and retrieval
 limits are not affected. The JWTAuthenticationRequest implementation in
 authlib/oauth2/rfc9101/authorization_server.py forwards request_uri to get_request_object() before an
 application-approved retrieval policy accepts the destination. This issue is fixed in version 1.9.0.
 (CVE-2026-114620)

Solution

Update the authlib library and its related packages to version 1.9.0 or later.

See Also

https://github.com/advisories/GHSA-x4rv-c3wx-4cr8

Plugin Details

Severity: Medium

ID: 477590

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 10/27/2026

Updated: 11/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 10.34

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2026-114620

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.9

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/27/2026

Vulnerability Publication Date: 10/22/2026

Reference Information

CVE: CVE-2026-114620

cwe: CWE-918