Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox
  • Firefox Esr
  • Thunderbird

Configuration 1 [-]

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*

No data.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=1979782 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html cve-icon
https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-9180 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-9180 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-64/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-65/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-66/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-66/#CVE-2025-9180 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-67/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-70/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-71/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-71/#CVE-2025-9180 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-72/ cve-icon cve-icon
History

Mon, 13 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Description Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2. Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

Mon, 03 Nov 2025 19:30:00 +0000

Type Values Removed Values Added
References

Thu, 30 Oct 2025 16:00:00 +0000

Type Values Removed Values Added
Description 'Same-origin policy bypass in the Graphics: Canvas2D component.' This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2. Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.
Title thunderbird: firefox: Same-origin policy bypass in the Graphics: Canvas2D component Same-origin policy bypass in the Graphics: Canvas2D component

Fri, 22 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
Title thunderbird: firefox: Same-origin policy bypass in the Graphics: Canvas2D component
Weaknesses CWE-200
References
Metrics threat_severity

None

 threat_severity

Important

Thu, 21 Aug 2025 18:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*

Thu, 21 Aug 2025 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla firefox Esr
Mozilla thunderbird
Vendors & Products Mozilla
Mozilla firefox
Mozilla firefox Esr
Mozilla thunderbird

Wed, 20 Aug 2025 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-346
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 19 Aug 2025 20:45:00 +0000

Type Values Removed Values Added
Description 'Same-origin policy bypass in the Graphics: Canvas2D component.' This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2025-08-19T20:33:54.532Z

Updated: 2026-04-13T14:25:49.457Z

Reserved: 2025-08-19T15:55:39.806Z

Link: CVE-2025-9180

cve-icon Vulnrichment

Updated: 2025-08-20T14:05:55.611Z

cve-icon NVD

Status : Modified

Published: 2025-08-19T21:15:30.390

Modified: 2026-04-13T15:17:13.590

Link: CVE-2025-9180

cve-icon Redhat

Severity : Important

Publid Date: 2025-08-19T20:33:54Z

Links: CVE-2025-9180 - Bugzilla