CVEvulnerability

CVE-2026-74934

7.5 HIGH Published 2026-08-18 Modified 2026-08-24 Official page ↗
Status
Analyzed
Published
2026-08-18
Last modified
2026-08-24
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-200, CWE-284, CWE-346

Description

Site isolation issue in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

Affected configurations

• mozilla firefox (< 115.39.0) • mozilla firefox (>= 116.0 < 140.14.0) • mozilla firefox (>= 141.0 < 153.1.0) • mozilla thunderbird (< 140.14.0) • mozilla thunderbird (>= 141.0 < 153.1.0)

Related

Weakness · CWE (3)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-284 Improper Access Control weakness
  • CWE-346 Origin Validation Error weakness

References