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Vulnerabilities of Mozilla Thunderbird

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CVE Summary Score Published
CVE-2026-117882 Use-after-free in the Layout component 6.3 Medium Oct 27, 2026
CVE-2026-117878 Other issue, use-after-free in the Storage: IndexedDB component 6.3 Medium Oct 27, 2026
CVE-2026-117879 Incorrect boundary conditions in the Layout: Tables component 7.3 High Oct 27, 2026
CVE-2026-117880 Use-after-free in the XML component 6.3 Medium Oct 27, 2026
CVE-2026-117876 Use-after-free in the Layout: Text and Fonts component 6.3 Medium Oct 27, 2026
CVE-2026-117877 Use-after-free in the Layout: Text and Fonts component 6.3 Medium Oct 27, 2026
CVE-2026-117874 Use-after-free in the Internationalization component 6.3 Medium Oct 27, 2026
CVE-2026-117875 Use-after-free in the Layout: Scrolling and Overflow component 6.3 Medium Oct 27, 2026
CVE-2026-117873 Incorrect boundary conditions in the Audio/Video: Playback component 8.1 High Oct 27, 2026
CVE-2026-117871 Invalid pointer in the Graphics component 7.3 High Oct 27, 2026
CVE-2026-117872 Use-after-free in the JavaScript: Standard Library component 8.8 High Oct 27, 2026
CVE-2026-117868 Sandbox escape in the DOM: Networking component 9.6 Critical Oct 27, 2026
CVE-2026-117869 Use-after-free in the DOM: Core & HTML component 8.8 High Oct 27, 2026
CVE-2026-117870 Use-after-free in the JavaScript Engine component 7.3 High Oct 27, 2026
CVE-2026-117866 Privilege escalation due to use-after-free in the Graphics: Canvas2D component 7.3 High Oct 27, 2026
CVE-2026-117867 Use-after-free in the Layout component 7.3 High Oct 27, 2026
CVE-2026-117863 Information disclosure due to uninitialized memory in the Audio/Video component 6.5 Medium Oct 27, 2026
CVE-2026-117864 Sandbox escape in the Form Manager component 8.8 High Oct 27, 2026
CVE-2026-117865 Use-after-free in the JavaScript: GC component 6.3 Medium Oct 27, 2026
CVE-2026-117861 Sandbox escape in the DOM: Navigation component 9.6 Critical Oct 27, 2026
CVE-2026-117862 Privilege escalation due to incorrect boundary conditions in the Networking component 9.8 Critical Oct 27, 2026
CVE-2026-117860 Same-origin policy bypass in the DOM: Navigation component 8.1 High Oct 27, 2026
CVE-2026-113867 Thunderbird did not escape attribute values when serializing outgoing XMPP stanzas 9.1 Critical Oct 20, 2026
CVE-2026-113868 When authenticating to a POP3 or SMTP server using NTLM, Thunderbird did not check whether the server's challenge was… 5.3 Medium Oct 20, 2026
CVE-2026-113869 When Thunderbird asked for a security device password (for example a smartcard PIN or the Primary Password) while… 5.4 Medium Oct 20, 2026

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