{"id":"CVE-2020-15179","details":"The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using \u003cscript\u003e tag inside \u003cscratchsig\u003e tag, attackers with edit permission can execute scripts on visitors' browser. With MediaWiki JavaScript API, this can potentially lead to privilege escalation and/or account takeover. This has been patched in release 1.0.1. This has already been deployed to all Scratch Wikis. No workarounds exist other than disabling the extension completely.","aliases":["GHSA-gp9v-pg9f-vmp6"],"modified":"2026-07-09T01:30:32.689505Z","published":"2020-09-15T18:15:14Z","references":[{"type":"ADVISORY","url":"https://github.com/InternationalScratchWiki/wiki-scratchsig/security/advisories/GHSA-gp9v-pg9f-vmp6"},{"type":"FIX","url":"https://github.com/InternationalScratchWiki/wiki-scratchsig/commit/4160a39a20eebeb63a59eb7597a91b961eca6388"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/internationalscratchwiki/wiki-scratchsig","events":[{"introduced":"0"},{"fixed":"44c6ff3128a340a68a86bb780ba75ca55dac068c"},{"fixed":"4160a39a20eebeb63a59eb7597a91b961eca6388"}],"database_specific":{"cpe":"cpe:2.3:a:scratch-wiki:scratchsig:*:*:*:*:*:mediawiki:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.0.1"}],"source":["CPE_RANGE","REFERENCES"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15179.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"}]}