CVE-2025-11712 Affecting firefox package, versions <140.4-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-WOLFILATEST-FIREFOX-17763152
  • published1 Jul 2026
  • disclosed14 Oct 2025

Introduced: 14 Oct 2025

CVE-2025-11712  (opens in a new tab)

How to fix?

Upgrade Wolfi firefox to version 140.4-r0 or higher.

NVD Description

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

A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This could have contributed to an XSS on a site that unsafely serves files without a content-type header. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

CVSS Base Scores

version 3.1