Memory Leak Affecting libnginx-mod-js package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.32% (23rd percentile)

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  • Snyk IDSNYK-DEBIAN14-LIBNGINXMODJS-20940144
  • published15 Oct 2026
  • disclosed14 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-101025  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

There is no fixed version for Debian:14 libnginx-mod-js.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libnginx-mod-js package and not the libnginx-mod-js package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

Description

NGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.

Impact

This vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.

 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS Base Scores

version 3.1