Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | May 31, 2026 | May 27, 2026 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird | Jun 9, 2026 | Jun 9, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debuginfoUpgrade firefoxUpgrade firefox-debugsource | Jun 9, 2026 | May 19, 2026 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | May 24, 2026 | May 24, 2026 |
| Mfsa2026 46 | — | Upgrade to Mozilla Firefox version 151.0Upgrade to the latest version of Mozilla Firefox | May 19, 2026 | May 19, 2026 |
| Mfsa2026 48 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.11 | May 19, 2026 | May 19, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.11Upgrade to the latest version of Mozilla Thunderbird | May 20, 2026 | May 19, 2026 |
| Oracle_linux | — | Upgrade firefox-x11Upgrade thunderbirdUpgrade firefox | May 29, 2026 | May 19, 2026 |
| Redhat_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoNo solution existsUpgrade firefox-x11Upgrade firefox-debugsourceUpgrade thunderbird-debugsource | Jun 3, 2026 | May 19, 2026 |
| Rocky_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade firefox-x11 | Jun 1, 2026 | May 29, 2026 |
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