What is CVE-2017-9071?

CVE-2017-9071 is a medium-severity vulnerability in Modx Revolution, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2017-05-18.

How severe is CVE-2017-9071?

Medium severity. CVSS v3 base score is 4.7 out of 10.

XSS in Modx Revolution

CVE-2017-9071

In MODX Revolution before 2.5.7, an attacker might be able to trigger XSS by injecting a payload into the HTTP Host header of a request. This is exploitable only in conjunction with other issues such as Cache Poisoning.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-05-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (50.5th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Modx Revolution

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

citadelo.com/en/2017/04/modx-revolution-cms/ (Exploit, Patch, Third Party Advisory)
github.com/modxcms/revolution/pull/13426 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-9071?: CVE-2017-9071 is a medium-severity vulnerability in Modx Revolution, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2017-05-18.
How severe is CVE-2017-9071?: Medium severity. CVSS v3 base score is 4.7 out of 10.