{"id":"CVE-2025-5020","state":"PUBLISHED","title":"Links using non-HTTP schemes opened from other apps such as Safari could have allowed spoofing of website addresses","description":"Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139.","publishedAt":"2025-05-21T17:18:08.510Z","updatedAt":"2026-04-13T14:30:18.166Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox for iOS"],"affected":[{"vendor":"Mozilla","product":"Firefox for iOS","versions":[{"version":"139","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1951558","https://www.mozilla.org/security/advisories/mfsa2025-39/"],"weaknesses":["CWE-939"],"ingestedAt":"2026-10-29T20:09:39.787Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/5xxx/CVE-2025-5020.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-5020","state":"PUBLISHED","datePublished":"2025-05-21T17:18:08.510Z","dateUpdated":"2026-04-13T14:30:18.166Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2025-05-21T01:18:07.391Z"},"containers":{"cna":{"title":"Links using non-HTTP schemes opened from other apps such as Safari could have allowed spoofing of website addresses","descriptions":[{"lang":"en","value":"Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139."}],"affected":[{"vendor":"Mozilla","product":"Firefox for iOS","versions":[{"version":"139","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1951558"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-39/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-04-13T14:30:18.166Z"},"credits":[{"lang":"en","value":"James Lee"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-05-21T18:58:50.193524Z","id":"CVE-2025-5020","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-939","type":"CWE","lang":"en","description":"CWE-939 Improper Authorization in Handler for Custom URL Scheme"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-05-21T19:00:28.104Z"}}]}}}