What is CVE-2021-3799?

CVE-2021-3799 is a medium-severity vulnerability in Getgrav Getgrav/grav-Plugin-Admin, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 5.4/10. Published 2021-09-27.

How severe is CVE-2021-3799?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Getgrav Getgrav/grav-Plugin-Admin

CVE-2021-3799

grav-plugin-admin is vulnerable to Improper Restriction of Rendered UI Layers or Frames

Published 2021-09-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.016 (74.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.8% 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

Getgrav Getgrav/grav-Plugin-Admin — versions unspecified
Getgrav Grav-Plugin-Admin

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

huntr.dev/bounties/d73f24a8-302b-4f9f-abb8-54688abd9813 (Exploit, Third Party Advisory)
github.com/getgrav/grav-plugin-admin/commit/853abfbbd3c14a0a601c941dcfaa3858b62… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3799?: CVE-2021-3799 is a medium-severity vulnerability in Getgrav Getgrav/grav-Plugin-Admin, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 5.4/10. Published 2021-09-27.
How severe is CVE-2021-3799?: Medium severity. CVSS v3 base score is 5.4 out of 10.