{"id":"CVE-2026-100383","title":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - WikiLam…","summary":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - WikiLam…","severity":"medium","cvss":4.8,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-79"],"vendor":"Wikimedia Foundation","product":"Mediawiki - WikiLambda Extension","affected":["mediawiki_-_wikilambda_extension 1.47.0-alpha"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T22:17:10.303","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100383","references":[{"url":"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1326391","label":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"},{"url":"https://phabricator.wikimedia.org/T434967","label":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-25T21:19:40.218Z","slug":"CVE-2026-100383","body":"## Overview\n\nImproper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":26.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}