Sandbox escape in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
CVSS Details
- CVSS 3.1 Base Score: 10
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11 | Feb 27, 2026 | Feb 25, 2026 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-debuginfo | Mar 27, 2026 | Feb 24, 2026 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Feb 27, 2026 | Feb 27, 2026 |
| Mfsa2026 13 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 148.0 | Feb 25, 2026 | Feb 24, 2026 |
| Mfsa2026 15 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.8 | Feb 25, 2026 | Feb 24, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.8Upgrade to the latest version of Mozilla Thunderbird | Feb 25, 2026 | Feb 24, 2026 |
| Oracle_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Feb 27, 2026 | Feb 24, 2026 |
| Redhat_linux | — | Upgrade thunderbird-debugsourceUpgrade firefox-debugsourceNo solution existsUpgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbirdUpgrade firefox-x11Upgrade thunderbird-debuginfo | Feb 26, 2026 | Feb 24, 2026 |
| Rocky_linux | — | Upgrade thunderbird-debugsourceUpgrade firefox-x11Upgrade firefoxUpgrade thunderbirdUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Mar 2, 2026 | Feb 26, 2026 |
| Suse | — | Upgrade MozillaThunderbird-openpgp-librnpUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbirdUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-translations-other | Mar 10, 2026 | Feb 26, 2026 |
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