CVE-2025-6429 (GCVE-0-2025-6429)
Vulnerability from cvelistv5
Published
2025-06-24 12:28
Modified
2026-04-13 14:30
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Summary
Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an `embed` tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.
References
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 128.12
Unaffected: 140
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   Mozilla Thunderbird Unaffected: 128.12
Unaffected: 140
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Show details on NVD website

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