CVE-2023-50762

Name: CVE-2023-50762
Creator: NVD / NIST
Published: 2023-12-19T14:15:07.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2023-50762 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a different context, such as a signed GIT commit, could be used to spoof an email message. This vulnerability affects Thunderbird < 115.6.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS Probability

0.63%

45.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Thunderbird	< 115.6
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1862625Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
https://www.debian.org/security/2023/dsa-5582Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2023-55/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1862625Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
https://www.debian.org/security/2023/dsa-5582Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2023-55/Vendor Advisory

Timeline

Published: Dec 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-50762?

How severe is CVE-2023-50762?

CVE-2023-50762 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2023-50762?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-50762?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST