Resource Exhaustion Affecting authentik-2025.12 package, versions <2025.12.6-r14


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.3% (21st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CHAINGUARDLATEST-AUTHENTIK202512-20145008
  • published25 Sept 2026
  • disclosed23 Sept 2026

Introduced: 23 Sep 2026

NewCVE-2026-59980  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Chainguard authentik-2025.12 to version 2025.12.6-r14 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream authentik-2025.12 package and not the authentik-2025.12 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

hpack is an HTTP/2 Header Encoding for Python. Prior to version 4.2.0, unbounded variable integer decoding can cause run-away computation on malformed input leading to O(n^2) runtime, effectively blocking further processing with large enough unsanitized input. A fix is available in python-hyper/hpack v4.2.0 to restricted variable integer decoding to uint32 to prevent run-away computation. As a workaround, sanitize input to hpack decoder for long sequences of 0xFF values to prevent malicious use.

CVSS Base Scores

version 3.1