cve.bz

CVE-2026-0878

8.0 highEPSS 0.5%

High (8.0) in mozilla. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.0 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-31)
CWEs
CWE-20, CWE-119
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON