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Description

Sandboxed iframes on webpages could potentially allow downloads to the device, bypassing the expected sandbox restrictions declared on the parent page This vulnerability affects Firefox for iOS < 141.

PUBLISHED Reserved 2025-07-17 | Published 2025-08-19 | Updated 2025-08-20 | Assigner mozilla

Problem types

Sandboxed iframes could allow local downloads despite sandbox restrictions

Product status

Any version before 141
affected

Credits

Narendra Bhati

References

bugzilla.mozilla.org/show_bug.cgi?id=1912671

www.mozilla.org/security/advisories/mfsa2025-60/

cve.org (CVE-2025-54143)

nvd.nist.gov (CVE-2025-54143)

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