We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Aug 5, 2026 | Aug 4, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jul 23, 2026 | Jul 23, 2026 |
| Mfsa2026 67 | — | Upgrade to Mozilla Firefox version 152.0.6 | Jul 14, 2026 | Jul 14, 2026 |
| Mfsa2026 70 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.13 | Jul 21, 2026 | Jul 21, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.13Upgrade to the latest version of Mozilla Thunderbird | Jul 21, 2026 | Jul 21, 2026 |
| Redhat_linux | — | Upgrade firefox-x11Upgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceNo solution existsUpgrade firefox-debugsourceUpgrade firefox | Jul 27, 2026 | Jul 14, 2026 |
| Rocky_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfo | Jul 31, 2026 | Jul 29, 2026 |
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