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CVE-2023-3550

Good to know:

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Date: September 25, 2023

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.

Language: PHP

Severity Score

Related Resources (7)

https://fluidattacks.com/advisories/blondie/
https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/
https://nvd.nist.gov/vuln/detail/CVE-2023-3550
https://www.debian.org/security/2023/dsa-5520
https://www.mediawiki.org/wiki/MediaWiki/
https://www.mend.io/vulnerability-database/CVE-2023-3550

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

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Upgrade Version

Upgrade to version 1.40.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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