CVE catalog

CVE-2026-101025

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

[CVE catalog]

Severity: Medium · CVSS 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Oct 14, 2026, 3:17:01 PM UTC
Updated: Oct 14, 2026, 3:17:01 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.32% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libnginx-mod-js	sid	`1.0.2-2`	fixed
Debian	libnginx-mod-js	forky	`1.0.2-2`	fixed
Debian	libnginx-mod-js	trixie	`0.8.9-1`	vulnerable
Debian	libnginx-mod-js	bookworm	`0.7.9-2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libnginx-mod-js	source	sid	`1.0.2-1`	not yet assigned	Not reported	Not reported
Debian	libnginx-mod-js	source	forky	`1.0.2-1`	not yet assigned	Not reported	Not reported
Debian	libnginx-mod-js	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libnginx-mod-js	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libnginx-mod-http-js]Affected
Source package: [libnginx-mod-js]
Details (2)
- 0.7.9-2 · amd64 · bookworm
  Affected
  nvd · libnginx-mod-js · debian · bookworm; nvd · libnginx-mod-js · debian · 12
- 0.7.9-2 · arm64 · bookworm
  Affected
  nvd · libnginx-mod-js · debian · bookworm; nvd · libnginx-mod-js · debian · 12
[libnginx-mod-stream-js]Affected
Source package: [libnginx-mod-js]
Details (2)
- 0.7.9-2 · amd64 · bookworm
  Affected
  nvd · libnginx-mod-js · debian · bookworm; nvd · libnginx-mod-js · debian · 12
- 0.7.9-2 · arm64 · bookworm
  Affected
  nvd · libnginx-mod-js · debian · bookworm; nvd · libnginx-mod-js · debian · 12
[njs]Affected
Source package: [libnginx-mod-js]
Details (2)
- 0.7.9-2 · amd64 · bookworm
  Affected
  nvd · libnginx-mod-js · debian · bookworm; nvd · libnginx-mod-js · debian · 12
- 0.7.9-2 · arm64 · bookworm
  Affected
  nvd · libnginx-mod-js · debian · bookworm; nvd · libnginx-mod-js · debian · 12

[Debian 13 (Trixie)]

[libnginx-mod-http-js]Affected
Source package: [libnginx-mod-js]
Details (2)
- 0.8.9-1 · amd64 · trixie
  Affected
  nvd · libnginx-mod-js · debian · 13
- 0.8.9-1 · arm64 · trixie
  Affected
  nvd · libnginx-mod-js · debian · 13
[libnginx-mod-stream-js]Affected
Source package: [libnginx-mod-js]
Details (2)
- 0.8.9-1 · amd64 · trixie
  Affected
  nvd · libnginx-mod-js · debian · 13
- 0.8.9-1 · arm64 · trixie
  Affected
  nvd · libnginx-mod-js · debian · 13
[njs]Affected
Source package: [libnginx-mod-js]
Details (2)
- 0.8.9-1 · amd64 · trixie
  Affected
  nvd · libnginx-mod-js · debian · 13
- 0.8.9-1 · arm64 · trixie
  Affected
  nvd · libnginx-mod-js · debian · 13

Observed: Oct 25, 2026, 7:47:55 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]