🛡️ CVE-2022-1520
🟡 CVSS 4.3 — Medium ✅ No Known Exploit CWE-346 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

When viewing an email message A, which contains an attached message B, where B is encrypted or digitally signed or both, Thunderbird may show an incorrect encryption or signature status. After opening and viewing the attached message B, when returning to the display of message A, the message A might be shown with the security status of message B. This vulnerability affects Thunderbird < 91.9.

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE CWE-346
Public Exploit ✅ No
Source NVD
Published 2022-12-22
Updated 2026-06-08
Modified 2025-04-16
Fix URL N/A

Affected Packages

Software From version Fixed in
thunderbird 91.9

References

Issue Tracking, Permissions Required, Vendor Advisory https://bugzilla.mozilla.org/show_bug.cgi?id=1745019
Issue Tracking, Permissions Required, Vendor Advisory https://bugzilla.mozilla.org/show_bug.cgi?id=1745019

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