{"id":"CVE-2026-58520","state":"PUBLISHED","title":"UrlShortener defaults to ineffective validation open to third-party redirects","description":"URL redirection to untrusted site ('open redirect') vulnerability in The Wikimedia Foundation Mediawiki - UrlShortener Extension allows Cross-Site Flashing.\n\nThis issue affects Mediawiki - UrlShortener Extension: from * before 1.43.9, 1.44.6, 1.45.4.","publishedAt":"2026-07-01T17:14:06.292Z","updatedAt":"2026-07-01T17:56:06.753Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","source":"wikimedia-foundation"},"assigner":"wikimedia-foundation","products":["The Wikimedia Foundation Mediawiki - UrlShortener Extension"],"affected":[{"vendor":"The Wikimedia Foundation","product":"Mediawiki - UrlShortener Extension","defaultStatus":"unaffected","versions":[{"version":"*","status":"affected","lessThan":"1.43.9, 1.44.6, 1.45.4","versionType":"semver"}]}],"references":["https://phabricator.wikimedia.org/T418431","https://gerrit.wikimedia.org/r/q/I7a59cc4c351b5aa47ed46f7a14a1105fd1ecc5b5"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/58xxx/CVE-2026-58520.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58520","state":"PUBLISHED","datePublished":"2026-07-01T17:14:06.292Z","dateUpdated":"2026-07-01T17:56:06.753Z","assignerShortName":"wikimedia-foundation","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateReserved":"2026-07-01T03:40:44.769Z"},"containers":{"cna":{"title":"UrlShortener defaults to ineffective validation open to third-party redirects","descriptions":[{"lang":"en","value":"URL redirection to untrusted site ('open redirect') vulnerability in The Wikimedia Foundation Mediawiki - UrlShortener Extension allows Cross-Site Flashing.\n\nThis issue affects Mediawiki - UrlShortener Extension: from * before 1.43.9, 1.44.6, 1.45.4."}],"affected":[{"vendor":"The Wikimedia Foundation","product":"Mediawiki - UrlShortener Extension","defaultStatus":"unaffected","versions":[{"version":"*","status":"affected","lessThan":"1.43.9, 1.44.6, 1.45.4","versionType":"semver"}]}],"references":[{"url":"https://phabricator.wikimedia.org/T418431"},{"url":"https://gerrit.wikimedia.org/r/q/I7a59cc4c351b5aa47ed46f7a14a1105fd1ecc5b5"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"LOW","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601 URL redirection to untrusted site ('open redirect')","type":"CWE"}]}],"providerMetadata":{"shortName":"wikimedia-foundation","orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateUpdated":"2026-07-01T17:14:06.292Z"},"impacts":[{"capecId":"CAPEC-178","descriptions":[{"lang":"en","value":"CAPEC-178 Cross-Site Flashing"}]}],"credits":[{"lang":"en","value":"Krinkle","type":"finder"},{"lang":"en","value":"DAlangi_WMF","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-01T17:55:53.098995Z","id":"CVE-2026-58520","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-01T17:56:06.753Z"}}]}}}