CVE-2025-8042

Sandboxed iframe could start downloads

CVSS 9.8 CRITICALEPSS 0.4%CWE-732

Firefox for Android allowed a sandboxed iframe without the `allow-downloads` attribute to start downloads. This vulnerability was fixed in Firefox 141.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mozilla · Firefox

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1791322 https://www.mozilla.org/security/advisories/mfsa2025-56/