CVE-2025-6429 Affecting libmozjs-128-0 package, versions <128.14.0-160000.1.1


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.36% (27th percentile)

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  • Snyk IDSNYK-SLES1600-LIBMOZJS1280-14375824
  • published11 Dec 2025
  • disclosed3 Dec 2025

Introduced: 3 Dec 2025

CVE-2025-6429  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libmozjs-128-0 to version 128.14.0-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libmozjs-128-0 package and not the libmozjs-128-0 package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an embed tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.

CVSS Base Scores

version 3.1