What is CVE-2021-44937?

CVE-2021-44937 is a medium-severity vulnerability in Glfusion, classified under Improper Authentication. CVSS score: 5.3/10. Published 2021-12-14.

How severe is CVE-2021-44937?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Glfusion

CVE-2021-44937

glFusion CMS v1.7.9 is affected by an arbitrary user registration vulnerability in /public_html/users.php. An attacker can register with the mailbox of any user. When users want to register, they will find that the mailbox has been occupied.

Vulnerability class: Broken Authentication

Published 2021-12-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.0th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% 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

Glfusion — versions 1.7.9

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

github.com/glFusion/glfusion/issues/485 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-44937?: CVE-2021-44937 is a medium-severity vulnerability in Glfusion, classified under Improper Authentication. CVSS score: 5.3/10. Published 2021-12-14.
How severe is CVE-2021-44937?: Medium severity. CVSS v3 base score is 5.3 out of 10.