XSS in Modx Revolution

CVE-2017-1000223

A stored web content injection vulnerability (WCI, a.k.a XSS) is present in MODX Revolution CMS version 2.5.6 and earlier. An authenticated user with permissions to edit users can save malicious JavaScript as a User Group name and potentially take control over victims' accounts. This can lead to an escalation of privileges providing complete administrative control over the CMS.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (39.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2017-1000223?
CVE-2017-1000223 is a medium-severity vulnerability in Modx Revolution, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-11-17.
How severe is CVE-2017-1000223?
Medium severity. CVSS v3 base score is 5.4 out of 10.