{"id":"CVE-2026-53900","summary":"Cookie injection was possible when opening a PDF link","details":"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.","modified":"2026-08-21T11:49:00.123603761Z","published":"2026-06-16T11:53:05.773Z","related":["CGA-r3hc-245h-j87g"],"database_specific":{"cna_assigner":"mozilla","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53900.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53900.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53900"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2026-56/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2043204"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mozilla-mobile/firefox-ios","events":[{"introduced":"0"},{"fixed":"df0ceea8ef301835448e61fb2ed08a8bd30f8bbf"}],"database_specific":{"cpe":"cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:iphone_os:*:*","extracted_events":[{"introduced":"0"},{"fixed":"152.0"}],"source":"CPE_RANGE"}}],"versions":["firefox-v151.1","firefox-v151.0","firefox-v150.1","firefox-v149.2","firefox-v149.0","focus/klar-v148.2","firefox-v148.1","firefox-v147.5","firefox-v147.4","firefox-v146.1","firefox-v145.2","firefox-v144.3","firefox-v144.2","firefox-v144.1","focus/klar-v143.0","firefox-v142.0","20.1","AuroraV15","AuroraV14","AuroraV13","AuroraV11","AuroraV10","AuroraV8","AuroraV7","AuroraV6","AuroraV2","AuroraV1","AuroraV3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53900.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"}]}