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CVE-2025-11712

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CVSS 3.1
6.1 medium
EPSS
<1%p17
Published
()
Modified
Description

A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This could have contributed to an XSS on a site that unsafely serves files without a content-type header. This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-116
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

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