Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 19 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird

Wed, 30 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 157. Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
References

Tue, 29 Sep 2026 16:30:00 +0000

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

Tue, 29 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

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


Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 157.
Title Use-after-free in the JavaScript: WebAssembly component
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-09-30T17:14:55.220Z

Reserved: 2026-09-26T19:17:33.309Z

Link: CVE-2026-100796

cve-icon Vulnrichment

Updated: 2026-09-29T14:34:31.877Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-29T13:17:44.650

Modified: 2026-10-19T15:23:34.410

Link: CVE-2026-100796

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T00:30:06Z

Weaknesses