CVE-2023-3550highCWE-79

CVE-2023-3550: high-severity vulnerability in MediaWiki

Stored XSS leads to privilege escalation in MediaWiki v1.40.0

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.3epss 1.4%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Affected products
MediaWiki · MediaWiki