CVE-2025-1936
High
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.
SeverityHigh
CVSS7.3
Exploit probability—
Product
Mozilla Firefox
PublishedMar 4, 2025
First seenMar 4, 2025
Weakness typeCWE-158CWE-158
How to fix
Update
- mozilla firefox128.8.0, 136.0 or later
- mozilla thunderbird128.8.0, 136.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 128.8.0, v < 136.0 | 128.8.0, 136.0 |
| mozilla thunderbird | v < 128.8.0, 129.0 ≤ v < 136.0 | 128.8.0, 136.0 |
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