PT-2026-102596 · Mozilla · Firefox Esr+2

Tomoya Nakanishi

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CVE-2026-100822

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Published

2026-09-29

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Updated

2026-09-29

CVSS v3.1

5.4

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157
Description A spoofing issue exists within the Networking: HTTP component.
Recommendations Update Firefox to version 157. Update Firefox ESR to version 153.4. Update Thunderbird to version 157.

Fix

UI Misrepresentation of Critical Information

Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com

Weakness Enumeration

CWE-451

Related Identifiers

CVE-2026-100822

Affected Products

Firefox
Firefox Esr
Thunderbird