{"id":"CVE-2026-77609","title":"Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages","summary":"Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, `Special:URIResolver` resolves its user-controlled subpage to a MediaWiki title and is…","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-601"],"vendor":"mediawiki","product":"mediawiki/semantic-media-wiki","affected":["mediawiki/semantic-media-wiki <= 7.1.0"],"patched":["mediawiki/semantic-media-wiki 7.2.0"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T17:17:01.270","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77609","references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0","label":"security-advisories@github.com"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-hw3m-8j5x-94ff","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-hw3m-8j5x-94ff"}],"tags":["nvd","ghsa","composer","cve.org"],"aliases":["GHSA-hw3m-8j5x-94ff"],"ecosystem":"composer","ingestedAt":"2026-09-18T17:46:41.524Z","epss":0.00147,"epssPercentile":0.04278,"slug":"CVE-2026-77609","body":"## Overview\n\nSemantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, `Special:URIResolver` resolves its user-controlled subpage to a MediaWiki title and issues an HTTP 303 redirect to `$title->getFullURL()` without validating the resolved target. A crafted subpage can make that target point off-host: an interwiki prefix redirects to the foreign wiki (for example `Special:URIResolver/mw-3AFoo`, which decodes to `mw:Foo`, redirects to `https://www.mediawiki.org/wiki/Foo`), and where the resolved URL carries an authority the target can even embed `user:pass@host` credentials. The result is an open redirect to an attacker-influenced host, usable for phishing from a trusted wiki URL. Version 7.2.0 fixes the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-77609)\n\nAffected packages:\n\n- `mediawiki/semantic-media-wiki <= 7.1.0`\n\nPatched in:\n\n- `mediawiki/semantic-media-wiki 7.2.0`\n\nSource: https://github.com/advisories/GHSA-hw3m-8j5x-94ff","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}