What is CVE-2018-12988?

CVE-2018-12988 is a high-severity vulnerability in Greencms, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-06-29.

How severe is CVE-2018-12988?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Greencms

CVE-2018-12988

GreenCMS 2.3.0603 has an arbitrary file download vulnerability via an index.php?m=admin&c=media&a=downfile URI.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-06-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (74.7th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Greencms — versions 2.3.0603

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/GreenCMS/GreenCMS/issues/111 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-12988?: CVE-2018-12988 is a high-severity vulnerability in Greencms, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-06-29.
How severe is CVE-2018-12988?: High severity. CVSS v3 base score is 7.5 out of 10.