# CVE-2023-50761: Mozilla Thunderbird and 1 other: The signature of a digitally signed S/MIME email message may optionally specify the signature creation… CVE-2023-50761 is fixed in 7 products on 2 platforms, first by DEBIAN-CVE-2023-50761, released December 19, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-50761 - Priority: High - CVSS: 7.5 (medium) - EPSS: 0.0063 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Dec 19, 2023 - Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-50761 ## Description The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be used to give recipients the impression that a message was sent at a different date or time. This vulnerability affects Thunderbird < 115.6. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Windows apps | Mozilla Thunderbird (en-US) | 115.8.0 | [Mozilla Thunderbird (en-US) 115.8.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-115.8.0.md) | Feb 21, 2024 | | Linux | thunderbird Debian 11.6 (bullseye) | 1:115.6.0-1~deb11u1 | [DSA-5582-1](https://patchblox.com/security/data/fix/linux/dsa-5582-1.md) | Dec 21, 2023 | | Linux | thunderbird Debian 12.15 (bookworm) | 1:115.6.0-1~deb12u1 | [DSA-5582-1](https://patchblox.com/security/data/fix/linux/dsa-5582-1.md) | Dec 21, 2023 | | Linux | thunderbird Debian 13.5 (trixie) | 1:115.6.0-1 | [DEBIAN-CVE-2023-50761](https://patchblox.com/security/data/fix/linux/debian-cve-2023-50761.md) | Dec 19, 2023 | | Linux | thunderbird Debian 14 | 1:115.6.0-1 | [DEBIAN-CVE-2023-50761](https://patchblox.com/security/data/fix/linux/debian-cve-2023-50761.md) | Dec 19, 2023 | | Linux | thunderbird RHEL 8 | 0:115.6.0-1.el8_9 | [RHSA-2024:0003](https://patchblox.com/security/data/fix/linux/rhsa-2024-0003.md) | Jan 2, 2024 | | Linux | thunderbird RHEL 9 | 0:115.6.0-1.el9_3 | [RHSA-2024:0001](https://patchblox.com/security/data/fix/linux/rhsa-2024-0001.md) | Jan 2, 2024 | | Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:115.6.0+build2-0ubuntu0.20.04.1 | [thunderbird 1:115.6.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-115.6.0-build2-0ubuntu0.20.04.1.md) | Dec 19, 2023 | | Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:115.6.0+build2-0ubuntu0.22.04.1 | [thunderbird 1:115.6.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-115.6.0-build2-0ubuntu0.22.04.1.md) | Dec 19, 2023 | | Linux | thunderbird almalinux 8 | 115.6.0-1.el8_9.alma | [ALSA-2024:0003](https://patchblox.com/security/data/fix/linux/alsa-2024-0003.md) | Jan 2, 2024 | | Linux | thunderbird almalinux 9 | 115.6.0-1.el9_3.alma | [ALSA-2024:0001](https://patchblox.com/security/data/fix/linux/alsa-2024-0001.md) | Jan 2, 2024 | | Linux | thunderbird ol 8 | 0:115.6.0-1.0.1.el8_9 | [ELSA-2024-0003](https://patchblox.com/security/data/fix/linux/elsa-2024-0003.md) | Jan 3, 2024 | | Linux | thunderbird ol 9 | 0:115.6.0-1.0.1.el9_3 | [ELSA-2024-0001](https://patchblox.com/security/data/fix/linux/elsa-2024-0001.md) | Jan 3, 2024 | | Linux | thunderbird rocky 8 | 0:115.6.0-1.el8_9 | [RLSA-2024:0003](https://patchblox.com/security/data/fix/linux/rlsa-2024-0003.md) | Jan 9, 2024 | | Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:115.6.0+build2-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:115.6.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-115.6.0-build2-0ubuntu0.20.04.1.md) | Dec 19, 2023 | | Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:115.6.0+build2-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:115.6.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-115.6.0-build2-0ubuntu0.22.04.1.md) | Dec 19, 2023 | | Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:115.6.0+build2-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:115.6.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-115.6.0-build2-0ubuntu0.20.04.1.md) | Dec 19, 2023 | | Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:115.6.0+build2-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:115.6.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-115.6.0-build2-0ubuntu0.22.04.1.md) | Dec 19, 2023 | | Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:115.6.0+build2-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:115.6.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-115.6.0-build2-0ubuntu0.20.04.1.md) | Dec 19, 2023 | | Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:115.6.0+build2-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:115.6.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-115.6.0-build2-0ubuntu0.22.04.1.md) | Dec 19, 2023 | | Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:115.6.0+build2-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:115.6.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-115.6.0-build2-0ubuntu0.20.04.1.md) | Dec 19, 2023 | | Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:115.6.0+build2-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:115.6.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-115.6.0-build2-0ubuntu0.22.04.1.md) | Dec 19, 2023 | | Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:115.6.0+build2-0ubuntu0.20.04.1 | [xul-ext-lightning 1:115.6.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-115.6.0-build2-0ubuntu0.20.04.1.md) | Dec 19, 2023 | | Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:115.6.0+build2-0ubuntu0.22.04.1 | [xul-ext-lightning 1:115.6.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-115.6.0-build2-0ubuntu0.22.04.1.md) | Dec 19, 2023 | --- Data as of 2026-11-09T13:31:49Z UTC. 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