CVE-2020-27620

EPSS 0.9%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

22 Oct 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

n/a · n/a

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References

https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634749 https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634751 https://gerrit.wikimedia.org/r/c/mediawiki/skins/Cosmos/+/634752 https://phabricator.wikimedia.org/T265440