XSS in MediaWiki Skin\
CVE-2020-27620
The Cosmos Skin for MediaWiki through 1.35.0 has stored XSS because MediaWiki messages were not being properly escaped. This is related to wfMessage and Html::rawElement, as demonstrated by CosmosSocialProfile::getUserGroups.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.011 (62.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Mediawiki Skin\ — versions cosmos
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-27620?
- CVE-2020-27620 is a medium-severity vulnerability in MediaWiki Skin\, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-22.
- How severe is CVE-2020-27620?
- Medium severity. CVSS v3 base score is 6.1 out of 10.