CVE-2023-37252NVD

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.

Severity Level

LOW (3.1)

Published Date

14/09/2026

Last Modified

14/09/2026

Exploitation Status

????

EPSS Score

0.20% (percentile 9.7%)

CVSS v3 (3.1)

LOW 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE-669 - CWE-669 Incorrect Resource Transfer Between Spheres

Product	Affected Versions	Patched Version
MediaWiki CheckUser	0 - < 1.35.11, 1.36.0 - < 1.38.7, 1.39.0 - < 1.39.4	N/A

📧Email Delivery — Threat intel straight to your inbox.

♾️Unlimited Vendors — Track your entire stack.

🚨All New CVEs — Be the first to know.

⚙️Custom EPSS — Filter noise, focus on risk.