Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11 | Apr 29, 2026 | Apr 27, 2026 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefox | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debuginfoUpgrade firefoxUpgrade firefox-debugsource | May 19, 2026 | Apr 21, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Apr 23, 2026 | Apr 23, 2026 |
| Freebsd | — | Upgrade firefox-esrUpgrade thunderbirdUpgrade firefox | Apr 30, 2026 | Apr 28, 2026 |
| Mfsa2026 30 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 150.0 | Apr 23, 2026 | Apr 21, 2026 |
| Mfsa2026 31 | — | Upgrade to Mozilla Firefox ESR version 115.35Upgrade to the latest version of Mozilla Firefox | Apr 23, 2026 | Apr 21, 2026 |
| Mfsa2026 32 | — | Upgrade to Mozilla Firefox ESR version 140.10Upgrade to the latest version of Mozilla Firefox | Apr 23, 2026 | Apr 21, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.10Upgrade to the latest version of Mozilla Thunderbird | Apr 23, 2026 | Apr 21, 2026 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11 | Apr 29, 2026 | Apr 21, 2026 |
| Redhat_linux | — | No solution existsUpgrade firefox-x11Upgrade thunderbirdUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox | Apr 29, 2026 | Apr 21, 2026 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefox-debuginfoUpgrade thunderbirdUpgrade thunderbird-debugsource | May 4, 2026 | Apr 28, 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