Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade firefox-x11Upgrade thunderbird | May 31, 2026 | May 27, 2026 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | May 24, 2026 | May 24, 2026 |
| Mfsa2026 45 | — | Upgrade to Mozilla Firefox version 150.0.3 | May 12, 2026 | May 12, 2026 |
| Mfsa2026 47 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.36 | 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 the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.11 | May 20, 2026 | May 19, 2026 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11 | May 29, 2026 | May 12, 2026 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debuginfoNo solution existsUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-x11Upgrade firefox-debugsource | Jun 3, 2026 | May 12, 2026 |
| Rocky_linux | — | Upgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade firefoxUpgrade firefox-x11Upgrade thunderbirdUpgrade thunderbird-debuginfo | Jun 1, 2026 | May 29, 2026 |
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