Homepage

CVE-2026-0878 The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)

Threat Intelligence

EPSS
0.43% (37th percentile)

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-ALMALINUX10-THUNDERBIRD-15253353
  • published10 Feb 2026
  • disclosed21 Jan 2026
Report a new vulnerability Found a mistake?

Introduced: 21 Jan 2026

CVE-2026-0878  (opens in a new tab)

Amendment

The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by AlmaLinux.

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

References