Name: CVE-2026-100828: Protection Mechanism Failure
Creator: Rapid7
Published: 2026-09-29T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-100828, CWE-693, CVSS 9.6, EPSS 0.00151

Mitigation bypass in the Bookmarks & History component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

CVSS Details

CVSS 3.1 Base Score: 9.6
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon Linux Ami 2	—	Upgrade firefox	Oct 19, 2026	Oct 19, 2026
Amazon_linux_2023	—	Upgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-debuginfo	Oct 13, 2026	Sep 29, 2026
Debian	—	Upgrade firefox-esr	Oct 1, 2026	Sep 29, 2026
Mfsa2026 100	—	Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 153.4	Sep 29, 2026	Sep 29, 2026
Mfsa2026 97	—	Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 157.0	Sep 29, 2026	Sep 29, 2026
Mozilla Thunderbird	—	Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 153.4	Sep 30, 2026	Sep 30, 2026

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CVSS Details

Covered by Rapid7

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