Insertion of Sensitive Information Into Sent Data Affecting Firefox package, versions [,147.0.0)
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-14917211
- published13 Jan 2026
- disclosed13 Jan 2026
- creditAndrew McCreight
Introduced: 13 Jan 2026
CVE-2026-0881 (opens in a new tab)How to fix?
Upgrade Firefox to version 147.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data via the Messaging System component. An attacker can execute code outside of the intended sandboxed environment by leveraging crafted messages or interactions with this component.