CVE-2026-109760

Mitigation bypass in the Networking: HTTP component

Published Oct 13, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4836-1 firefox-esr security update
Debian DLA Debian DLA DLA-4863-1 thunderbird security update
Debian DSA Debian DSA DSA-6560-1 firefox-esr security update
History
Type Values Removed Values Added
Weaknesses CWE-693
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'}

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
References
Type Values Removed Values Added
Weaknesses CWE-200
CWE-296
Type Values Removed Values Added
Description Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Title Mitigation bypass in the Networking: HTTP component
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Oct 19, 2026, 12:30 PM
Reserved
Oct 13, 2026, 12:48 AM
Status
Deferred
Published
Oct 13, 2026, 1:17 PM
Modified
Oct 19, 2026, 1:16 PM