VULNERABILITY INTELLIGENCE

CVE-2026-53900

CVSS score4.3 MEDIUM
EPSS probability0.10%
CISA KEVNot currently listed
Published2026-06-16
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-345

Primary references