What is CVE-2018-14977?

CVE-2018-14977 is a medium-severity vulnerability in Q-Cms Qcms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-08-06.

How severe is CVE-2018-14977?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Q-Cms Qcms

CVE-2018-14977

An issue was discovered in QCMS 3.0.1. upload/System/Controller/guest.php has XSS, as demonstrated by the name parameter, a different vulnerability than CVE-2018-8070.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-08-06 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.007 (50.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Q-Cms Qcms — versions 3.0.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/AvaterXXX/QCMS/blob/master/XSS.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-14977?: CVE-2018-14977 is a medium-severity vulnerability in Q-Cms Qcms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-08-06.
How severe is CVE-2018-14977?: Medium severity. CVSS v3 base score is 6.1 out of 10.