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.

Remediation

References

CVE-2023-3550

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Severity

Critical

Classification

CVE-2023-3550 CWE-707 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Tags

Missing Update Known Vulnerabilities