CVE-2024-1936

Name: CVE-2024-1936
Creator: NVD / NIST
Published: 2024-03-04T22:15:46.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.68%

Last modified Jun 17, 2026

CVE-2024-1936 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third-party. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

Description

The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third-party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments. This vulnerability affects Thunderbird < 115.8.1.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.68%

47.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-922

Affected Software

Vendor	Product	Versions
Mozilla	Thunderbird	< 115.8.1
Debian	Debian Linux	10.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1860977Exploit, Issue Tracking, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/03/msg00022.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-11/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1860977Exploit, Issue Tracking, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/03/msg00022.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-11/Vendor Advisory

Timeline

Published: Mar 4, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-1936?

How severe is CVE-2024-1936?

CVE-2024-1936 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.

How do I fix CVE-2024-1936?

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-2024-1936?

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

Scan your code now

Source: NVD / NIST