What is CVE-2021-27112?

CVE-2021-27112 is a critical-severity vulnerability in Lightcms Project. CVSS score: 9.8/10. Published 2021-04-15.

How severe is CVE-2021-27112?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Lightcms Project

CVE-2021-27112

LightCMS v1.3.5 contains a remote code execution vulnerability in /app/Http/Controllers/Admin/NEditorController.php during the downloading of external images.

Published 2021-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Lightcms Project — versions 1.3.5

References

github.com/eddy8/LightCMS/issues/19 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-27112?: CVE-2021-27112 is a critical-severity vulnerability in Lightcms Project. CVSS score: 9.8/10. Published 2021-04-15.
How severe is CVE-2021-27112?: Critical severity. CVSS v3 base score is 9.8 out of 10.