CVE-2022-21710

Public Exploit
Cross-site Scripting in ShortDescription extension

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.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.29%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: StarCitizenTools mediawiki-extensions-ShortDescription
Published at:
Updated at:

References

Link Tags
https://github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/security/advisories/GHSA-mgcp-qw2r-6832 third party advisory exploit
https://github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/commit/7c86644158388620c6c858258cc4e1a8de6e48ea third party advisory patch
https://github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/commit/bf568edd892adb8528dcb64f75dddf3eeaccc12c third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-21710?
CVE-2022-21710 has been scored as a medium severity vulnerability.
How to fix CVE-2022-21710?
To fix CVE-2022-21710, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-21710 being actively exploited in the wild?
It is possible that CVE-2022-21710 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-21710?
CVE-2022-21710 affects StarCitizenTools mediawiki-extensions-ShortDescription.
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