What is CVE-2023-45367?

CVE-2023-45367 is a medium-severity vulnerability in Mediawiki. CVSS score: 6.5/10. Published 2023-10-09.

How severe is CVE-2023-45367?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Mediawiki

CVE-2023-45367

An issue was discovered in the CheckUser extension for MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. A user can use a rest.php/checkuser/v0/useragent-clienthints/revision/ URL to store an arbitrary number of rows in cu_useragent_clienthints, leading to a denial of service.

EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mediawiki — versions 1.40.0
N/a — versions n/a

References

cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-45367?: CVE-2023-45367 is a medium-severity vulnerability in Mediawiki. CVSS score: 6.5/10. Published 2023-10-09.
How severe is CVE-2023-45367?: Medium severity. CVSS v3 base score is 6.5 out of 10.