CVE-2023-37255
MEDIUMCVSS 6.1/10EPSS 0.41%
Last modified
CVE-2023-37255 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | <= 1.39.3 |
References
- https://phabricator.wikimedia.org/T333569Exploit, Issue Tracking
- https://phabricator.wikimedia.org/T333569Exploit, Issue Tracking
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-37255?
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.
How severe is CVE-2023-37255?
CVE-2023-37255 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.
How do I fix CVE-2023-37255?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2023-37255?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST