Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
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 | — | Upgrade firefoxUpgrade firefox-x11Upgrade thunderbird | May 30, 2025 | May 27, 2025 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbird | Jun 12, 2025 | May 27, 2025 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | Jun 11, 2025 | May 27, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | May 29, 2025 | May 27, 2025 |
| Freebsd | — | Upgrade firefox-esrUpgrade firefox | Jun 7, 2025 | Jun 5, 2025 |
| Mfsa2025 42 | — | Upgrade to Mozilla Firefox version 139.0Upgrade to the latest version of Mozilla Firefox | May 28, 2025 | May 27, 2025 |
| Mfsa2025 44 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 128.11 | May 28, 2025 | May 27, 2025 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 128.11 | May 28, 2025 | May 27, 2025 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | May 30, 2025 | May 27, 2025 |
| Redhat_linux | — | No solution existsUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefoxUpgrade thunderbird | May 30, 2025 | May 27, 2025 |
| Rocky_linux | — | Upgrade firefox-x11Upgrade thunderbirdUpgrade firefoxUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbird-debugsource | Jul 31, 2025 | Jul 29, 2025 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-otherUpgrade mozjs128-develUpgrade mozillafirefox-branding-upstreamUpgrade libmozjs-128-0Upgrade MozillaThunderbird-translations-otherUpgrade mozjs128Upgrade MozillaFirefox-develUpgrade MozillaThunderbird | Jun 3, 2025 | May 27, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | May 27, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub