CVE-2026-53900 – Cookie injection was possible when opening a PDF link

CVE ID :CVE-2026-53900

Published : June 16, 2026, 1:16 p.m. | 25 minutes ago

Description :Firefox for iOS preserved cookies set on the initial PDF request across cross-origin HTTP redirects in TemporaryDocument, allowing a malicious site to inject arbitrary cookies into requests to an unrelated target domain. This vulnerability was fixed in Firefox for iOS 152.0.

Severity: 0.0 | NA

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