An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-firefoxalma-upgrade-firefox-x11alma-upgrade-thunderbird | Jul 2, 2025 | Jun 24, 2025 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-firefoxamazon-linux-ami-2-upgrade-firefox-debuginfo | May 20, 2026 | May 20, 2026 | |
| Amazon_linux_2023 | amazon-linux-2023-upgrade-firefoxamazon-linux-2023-upgrade-firefox-debuginfoamazon-linux-2023-upgrade-firefox-debugsource | Jul 11, 2025 | Jun 24, 2025 | |
| Debian | debian-upgrade-firefox-esrdebian-upgrade-thunderbird | Jun 26, 2025 | Jun 24, 2025 | |
| Freebsd | freebsd-upgrade-package-firefoxfreebsd-upgrade-package-firefox-esrfreebsd-upgrade-package-thunderbird | Jul 5, 2025 | Jul 4, 2025 | |
| Mfsa2025 51 | mozilla-firefox-upgrade-140_0 | Jun 25, 2025 | Jun 24, 2025 | |
| Mfsa2025 52 | mozilla-firefox-esr-upgrade-115_25 | Jun 25, 2025 | Jun 24, 2025 | |
| Mfsa2025 53 | mozilla-firefox-esr-upgrade-128_12 | Jun 25, 2025 | Jun 24, 2025 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-128_12 | Jul 3, 2025 | Jun 24, 2025 | |
| Oracle_linux | — | oracle-linux-upgrade-firefoxoracle-linux-upgrade-firefox-x11 | Jul 3, 2025 | Jun 24, 2025 |
| Redhat_linux | no-fix-redhat-rpm-packageredhat-upgrade-firefoxredhat-upgrade-firefox-debuginforedhat-upgrade-firefox-debugsourceredhat-upgrade-firefox-x11redhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource | Jul 2, 2025 | Jun 24, 2025 | |
| Rocky_linux | rocky-upgrade-firefoxrocky-upgrade-firefox-debuginforocky-upgrade-firefox-debugsourcerocky-upgrade-firefox-x11rocky-upgrade-thunderbirdrocky-upgrade-thunderbird-debuginforocky-upgrade-thunderbird-debugsource | Feb 5, 2026 | Jul 29, 2025 | |
| Suse | — | suse-upgrade-gstreamer-plugin-pipewiresuse-upgrade-libmozjs-128-0suse-upgrade-libpipewire-0_3-0suse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-branding-slesuse-upgrade-mozillafirefox-branding-upstreamsuse-upgrade-mozillafirefox-develsuse-upgrade-mozillafirefox-translations-commonsuse-upgrade-mozillafirefox-translations-othersuse-upgrade-mozillathunderbirdsuse-upgrade-mozillathunderbird-translations-commonsuse-upgrade-mozillathunderbird-translations-othersuse-upgrade-mozjs128suse-upgrade-mozjs128-develsuse-upgrade-pipewiresuse-upgrade-pipewire-langsuse-upgrade-pipewire-modulessuse-upgrade-pipewire-modules-0_3suse-upgrade-pipewire-spa-plugins-0_2suse-upgrade-pipewire-spa-toolssuse-upgrade-pipewire-toolssuse-upgrade-xdg-desktop-portalsuse-upgrade-xdg-desktop-portal-develsuse-upgrade-xdg-desktop-portal-lang | Jun 27, 2025 | Jun 24, 2025 |
| Ubuntu | ubuntu-upgrade-thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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