CVE-2025-8029High· 8.1▾ TwilightThunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0.1 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
Thunderbird executed javascript: URLs when used in object and embed tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
firefox < 128.13.0firefox < 141.0firefox >= 140.0, < 140.1.0thunderbird < 128.13.0thunderbird < 141.0thunderbird >= 140.0, < 140.1.0Upgrade past the affected range:
firefox 140.1.0thunderbird 140.1.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-96869Medium· 4.3Information disclosure in the Networking component
CVE-2026-100832High· 8.8Use-after-free in the Graphics: Canvas2D component
CVE-2026-100831High· 8.8Use-after-free in the DOM: UI Events & Focus Handling component
CVE-2026-100830NoneMitigation bypass in the DOM: Navigation component
CVE-2026-100829NoneMitigation bypass in the DOM: Security component
CVE-2026-100828NoneMitigation bypass in the Bookmarks & History component