XSS in MediaWiki Shortdescription
CVE-2022-21710
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (61.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 61st percentile — 61.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/security/advi… (Exploit, Third Party Advisory)
- github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/commit/7c8664… (Patch, Third Party Advisory)
- github.com/StarCitizenTools/mediawiki-extensions-ShortDescription/commit/bf568e… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-21710?
- CVE-2022-21710 is a medium-severity vulnerability in MediaWiki Shortdescription, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2022-01-24.
- How severe is CVE-2022-21710?
- Medium severity. CVSS v3 base score is 4.7 out of 10.