CVE-2026-14899 Affecting MozillaThunderbird-translations-common package, versions <153.2.0-150400.13.3.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.47% (41st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES157-MOZILLATHUNDERBIRDTRANSLATIONSCOMMON-19944130
  • published19 Sept 2026
  • disclosed18 Sept 2026

Introduced: 18 Sep 2026

CVE-2026-14899  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 MozillaThunderbird-translations-common to version 153.2.0-150400.13.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream MozillaThunderbird-translations-common package and not the MozillaThunderbird-translations-common package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

The code to parse MIME headers for display when forwarding a message (if the setting to view all headers was enabled) had an off-by-one error, allowing a single byte to be read from the memory after the buffer for the headers, and potentially crashing Thunderbird. This vulnerability was fixed in Thunderbird 153 and Thunderbird 140.13.

CVSS Base Scores

version 3.1