Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4814-1 firefox-esr security update
Debian DSA Debian DSA DSA-6533-1 firefox-esr security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 13 Oct 2026 16:30:00 +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

Thu, 01 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-285

Wed, 30 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-451
Metrics cvssV3_1

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

ssvc

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


Wed, 30 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Description Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157. Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
References

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

Type Values Removed Values Added
Description Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157. Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, and Firefox 157.
References

Wed, 30 Sep 2026 08:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-285

Wed, 30 Sep 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-295

Tue, 29 Sep 2026 17:00:00 +0000

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

Tue, 29 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-295

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

Type Values Removed Values Added
Description Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
Title Spoofing issue in the Networking: HTTP component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-09-30T20:11:10.305Z

Reserved: 2026-09-26T19:18:38.463Z

Link: CVE-2026-100822

cve-icon Vulnrichment

Updated: 2026-09-30T19:46:35.891Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-29T13:17:47.503

Modified: 2026-10-13T16:13:02.617

Link: CVE-2026-100822

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T02:15:07Z

Weaknesses