CVE-2025-1936
7.3
HIGH
CVSS 3.1
EPSS 0.18%
Description
jar: URLs retrieve local file content packaged in a ZIP archive. The null and everything after it was ignored when retrieving the content from the archive, but the fake extension after the null was used to determine the type of content. This could have been used to hide code in a web extension disguised as something else like an image. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
How to fix CVE-2025-1936
To remediate CVE-2025-1936, upgrade the affected package to a fixed version below.
- —upgrade to 128.8.0esr-1~deb11u1 or later
- —upgrade to 1:128.8.0esr-1~deb11u1 or later
Is CVE-2025-1936 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 128.8.0esr-1~deb11u1
- from 0, < 1:128.8.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |