{"id":"CVE-2026-100238","state":"PUBLISHED","title":"Flow colon-separator and flow-guidedtour-optin-welcome-description messages allow stored XSS","description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Flow Extension: from * before 1.46.1, 1.45.5, 1.43.10.","publishedAt":"2026-09-29T16:12:06.871Z","updatedAt":"2026-09-30T20:11:08.570Z","severity":{"score":6.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"CISA-ADP"},"assigner":"wikimedia-foundation","products":["Wikimedia Foundation Mediawiki - Flow Extension"],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - Flow Extension","defaultStatus":"unaffected","versions":[{"version":"*","status":"affected","lessThan":"1.46.1, 1.45.5, 1.43.10","versionType":"semver"}],"repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/Flow/+/refs/heads/master"}],"references":["https://phabricator.wikimedia.org/T432425","https://gerrit.wikimedia.org/r/q/Ic6149363fe1de2440240fe88aebfd4ae30cea606"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100238.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100238","state":"PUBLISHED","datePublished":"2026-09-29T16:12:06.871Z","dateUpdated":"2026-09-30T20:11:08.570Z","assignerShortName":"wikimedia-foundation","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateReserved":"2026-09-25T16:02:34.842Z"},"containers":{"cna":{"title":"Flow colon-separator and flow-guidedtour-optin-welcome-description messages allow stored XSS","descriptions":[{"lang":"en","value":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Flow Extension: from * before 1.46.1, 1.45.5, 1.43.10."}],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - Flow Extension","defaultStatus":"unaffected","versions":[{"version":"*","status":"affected","lessThan":"1.46.1, 1.45.5, 1.43.10","versionType":"semver"}],"repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/Flow/+/refs/heads/master"}],"references":[{"url":"https://phabricator.wikimedia.org/T432425"},{"url":"https://gerrit.wikimedia.org/r/q/Ic6149363fe1de2440240fe88aebfd4ae30cea606"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"wikimedia-foundation","orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateUpdated":"2026-09-29T16:12:06.871Z"},"impacts":[{"capecId":"CAPEC-592","descriptions":[{"lang":"en","value":"CAPEC-592 Stored XSS"}]}],"credits":[{"lang":"en","value":"SomeRandomDeveloper","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":6.1,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"id":"CVE-2026-100238","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T18:40:56.402418Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T20:11:08.570Z"}}]}}}