ar: 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 affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1940027 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-14/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-16/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-17/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-18/ | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html |
Configuration 1 (hide)
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03 Nov 2025, 21:18
| Type | Values Removed | Values Added |
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| References |
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24 Jun 2025, 17:08
| Type | Values Removed | Values Added |
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| First Time |
Mozilla
Mozilla thunderbird Mozilla firefox |
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| CPE | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
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| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=1940027 - Permissions Required | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-14/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-16/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-17/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2025-18/ - Vendor Advisory |
26 Mar 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-158 |
25 Mar 2025, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.3 |
05 Mar 2025, 00:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Summary | (en) 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 affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8. |
04 Mar 2025, 14:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Published : 2025-03-04 14:15
Updated : 2025-11-03 21:18
NVD link : CVE-2025-1936
Mitre link : CVE-2025-1936
CVE.ORG link : CVE-2025-1936
JSON object : View
Improper Neutralization of Null Byte or NUL Character