Description

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.

INFO

Published Date :

2026-01-13T13:30:53.697Z

Last Modified :

2026-04-13T13:51:40.607Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2026-0878 vulnerability.

Vendors Products
Mozilla
  • Firefox
  • Firefox Esr
  • Thunderbird
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-0878.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2003989 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-0878 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-0878 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-01/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-03/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-03/#CVE-2026-0878 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-04/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-05/ cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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