CVE-2022-21710
4.7 · MEDIUMOverview
CVE-2022-21710 is a medium-severity vulnerability affecting mediawiki shortdescription. It was published on January 24, 2022 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
ShortDescription is a MediaWiki extension that provides local short description support. A cross-site scripting (XSS) vulnerability exists in versions prior to 2.3.4. On a wiki that has the ShortDescription enabled, XSS can be triggered on any page or the page with the action=info parameter, which displays the shortdesc property. This is achieved using the wikitext `{{SHORTDESC:<img src=x onerror=alert()>}}`. This issue has a patch in version 2.3.4.
Remediation
Check the references section for vendor advisories and patches from mediawiki. Update shortdescription to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mediawiki | shortdescription | >= 0, < 2.3.4 | Affected |
References
Frequently Asked Questions
What is CVE-2022-21710?
CVE-2022-21710 is a medium-severity vulnerability affecting mediawiki shortdescription. It was published on January 24, 2022 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
How severe is CVE-2022-21710?
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-21710?
Check the references section for vendor advisories and patches from mediawiki. Update shortdescription to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2022-21710?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-21710 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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