vulnerability
MFSA2025-59 Firefox: Security Vulnerabilities fixed in Firefox ESR 140.1 (CVE-2025-8037)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:C/I:C/A:N) | Jul 22, 2025 | Jul 23, 2025 | Nov 27, 2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:N)
Published
Jul 22, 2025
Added
Jul 23, 2025
Modified
Nov 27, 2025
Description
Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the `Secure` attribute. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1.
Solution
mozilla-firefox-esr-upgrade-140_1
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