{"id":"CVE-2026-100238","title":"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…","summary":"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…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"Wikimedia Foundation","product":"Mediawiki - Flow Extension","affected":["mediawiki_-_flow_extension < 1.46.1, 1.45.5, 1.43.10"],"published":"2026-09-29","updated":"2026-09-30","sourceUpdated":"2026-09-30T21:16:52.980","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100238","references":[{"url":"https://gerrit.wikimedia.org/r/q/Ic6149363fe1de2440240fe88aebfd4ae30cea606","label":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T432425","label":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-30T18:40:56.402418Z"},"epss":0.00188,"epssPercentile":0.08356,"ingestedAt":"2026-09-29T16:39:33.275Z","slug":"CVE-2026-100238","body":"## Overview\n\nImproper 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213989,"id":"CVE-2026-100238","ts":1790803596856,"field":"cvss","old":null,"new":"6.1"},{"seq":213988,"id":"CVE-2026-100238","ts":1790803596856,"field":"severity","old":"none","new":"medium"}]}