Out-of-Bounds Affecting Firefox package, versions [,150.0.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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-UNMANAGED-FIREFOX-16668425
- published14 May 2026
- disclosed12 May 2026
- creditggwhyp
Introduced: 12 May 2026
CVE-2026-8391 (opens in a new tab)How to fix?
Upgrade Firefox to version 150.0.3 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-Bounds in the JavaScript engine component. An attacker can cause unexpected behavior or potentially execute arbitrary code by exploiting flaws in the processing of JavaScript code.