What’s Vulnerable › Vulnerabilities
CVE-2023-37255
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2023-06-29 · updated 2026-06-17
- Weakness: CWE-79
Description
An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In Special:CheckUser, a check of the "get edits" type is vulnerable to HTML injection through the User-Agent HTTP request header.
Affected products
- Wikimedia Foundation MediaWiki: through 1.39.3
References
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