Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Skin\ | <= 1.35.0, cosmos |
Related Weaknesses (CWE)
References
- https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634749Vendor Advisory
- https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634751Vendor Advisory
- https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634752Vendor Advisory
- https://phabricator.wikimedia.org/T265440Vendor Advisory
- https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634749Vendor Advisory
- https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634751Vendor Advisory
- https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634752Vendor Advisory
- https://phabricator.wikimedia.org/T265440Vendor Advisory
FAQ
What is CVE-2020-27620?
CVE-2020-27620 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 CosmosSoci...
How severe is CVE-2020-27620?
CVE-2020-27620 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27620?
Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Skin\.