Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Tue, 13 Oct 2026 23:15:00 +0000

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

Tue, 13 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 13 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158. Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
References

Tue, 13 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}


Tue, 13 Oct 2026 13:00:00 +0000

Type Values Removed Values Added
Description Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158.
Title Use-after-free in the JavaScript: WebAssembly component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-10-13T18:08:25.527Z

Reserved: 2026-10-13T00:48:27.874Z

Link: CVE-2026-109761

cve-icon Vulnrichment

Updated: 2026-10-13T14:13:34.487Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T13:17:26.950

Modified: 2026-10-13T19:18:40.260

Link: CVE-2026-109761

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T23:00:14Z

Weaknesses