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

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://bugzilla.mozilla.org/show_bug.cgi?id=2043204 Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2026-56/ Vendor Advisory