Text injection in MediaWiki - CVE-2025-6591
Published: August 7, 2025
Vulnerability identifier: #VU113745
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-6591
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
The vulnerability allows a remote attacker to display arbitrary text output.
The vulnerability exists due to insufficient validation of user-supplied input on the API "action=feedcontributions" output. A remote attacker can inject and display arbitrary text messages in the API output.
How to mitigate CVE-2025-6591
Install updates from vendor's website.