CVEvulnerability

CVE-2026-0878

8.0 HIGH Published 2026-01-13 Modified 2026-07-15 Official page ↗
Status
Modified
Published
2026-01-13
Last modified
2026-07-15
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
8.0 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-119, CWE-20

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.

Affected configurations

• mozilla firefox (< 140.7.0) • mozilla firefox (< 147.0) • mozilla thunderbird (< 140.7.0) • mozilla thunderbird (< 147.0)

Related

Weakness · CWE (2)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
  • CWE-20 Improper Input Validation weakness

References