JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.

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Fixes

Solution

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Workaround

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History

Sat, 28 Feb 2026 00:15:00 +0000


Fri, 27 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 25 Feb 2026 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-843
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 25 Feb 2026 12:00:00 +0000

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

Tue, 24 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
Description JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148. JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
References

Tue, 24 Feb 2026 14:00:00 +0000

Type Values Removed Values Added
Description JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148.
Title JIT miscompilation in the JavaScript: WebAssembly component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-02-27T20:52:22.502Z

Reserved: 2026-02-19T15:06:43.289Z

Link: CVE-2026-2796

cve-icon Vulnrichment

Updated: 2026-02-27T20:49:11.113Z

cve-icon NVD

Status : Modified

Published: 2026-02-24T14:16:28.100

Modified: 2026-02-27T21:16:19.923

Link: CVE-2026-2796

cve-icon Redhat

Severity : Important

Publid Date: 2026-02-24T13:33:26Z

Links: CVE-2026-2796 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-02-25T11:39:14Z

Weaknesses