CVEvulnerability
CVE-2021-4140
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2022-12-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-91
Description
It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
Affected configurations
• mozilla firefox (< 96.0)
• mozilla firefox esr (< 91.5)
• mozilla thunderbird (< 91.5)
Related
Weakness · CWE (1)
- CWE-91 XML Injection weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1746720 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-03/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1746720 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-03/ Vendor Advisory