{"id":"BIT-mediawiki-2023-3550","summary":"Stored XSS leads to privilege escalation in MediaWiki v1.40.0","details":"Mediawiki v1.40.0 does not validate namespaces used in XML files.\n\nTherefore, if the instance administrator allows XML file uploads,\n\na remote attacker with a low-privileged user account can use this\n\nexploit to become an administrator by sending a malicious link to\n\nthe instance administrator.","aliases":["CVE-2023-3550"],"modified":"2025-05-20T10:02:07.006Z","published":"2024-03-06T11:01:36.392Z","database_specific":{"cpes":["cpe:2.3:a:mediawiki:mediawiki:1.40.0:-:*:*:*:*:*:*","cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*"],"severity":"Critical"},"references":[{"type":"WEB","url":"https://fluidattacks.com/advisories/blondie/"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html"},{"type":"WEB","url":"https://www.debian.org/security/2023/dsa-5520"},{"type":"WEB","url":"https://www.mediawiki.org/wiki/MediaWiki/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3550"}],"affected":[{"package":{"name":"mediawiki","ecosystem":"Bitnami","purl":"pkg:bitnami/mediawiki"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.40.0"},{"fixed":"1.40.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mediawiki/BIT-mediawiki-2023-3550.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"}]}],"schema_version":"1.7.3"}