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OpenAdvisories
Critical · 9.8 CVE-2025-54143 EUVD-2025-25230GHSA-x7hr-j7rg-h68w

Sandboxed iframes could allow local downloads despite sandbox restrictions

Published Aug 19, 2025 · Updated Apr 13, 2026 · Assigned by mozilla

Description

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

Affected products

VendorProductAffectedFixed
Mozilla Firefox for iOS — 141

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling firefox 141-r0 —

Advisories 2

References