High severity7.3NVD Advisory· Published Sep 25, 2023· Updated Jun 17, 2026
CVE-2023-3550
CVE-2023-3550
Description
Mediawiki v1.40.0 does not validate namespaces used in XML files.
Therefore, if the instance administrator allows XML file uploads,
a remote attacker with a low-privileged user account can use this
exploit to become an administrator by sending a malicious link to
the instance administrator.
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Affected products
3Patches
Vulnerability mechanics
References
5- fluidattacks.com/advisories/blondie/nvdExploitThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/11/msg00027.htmlnvdMailing ListThird Party Advisory
- www.debian.org/security/2023/dsa-5520nvdThird Party Advisory
- www.mediawiki.org/wiki/MediaWiki/nvdProduct
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/nvd
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