XSS in MediaWiki

CVE-2016-6333

Cross-site scripting (XSS) vulnerability in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via the edit box in Special:MyPage/common.css.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

  • Mediawiki — versions 1.26.0, 1.26.1, 1.26.2
  • N/a — versions n/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-6333?
CVE-2016-6333 is a medium-severity vulnerability in MediaWiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-04-20.
How severe is CVE-2016-6333?
Medium severity. CVSS v3 base score is 6.1 out of 10.