What is CVE-2024-52677?

CVE-2024-52677 is a critical-severity vulnerability in Hkcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-11-20.

How severe is CVE-2024-52677?

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

Arbitrary file upload in Hkcms

CVE-2024-52677

HkCms <= v2.3.2.240702 is vulnerable to file upload in the getFileName method in /app/common/library/Upload.php.

Vulnerability class: Unrestricted File Upload

Published 2024-11-20 · 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: 0.006 (48.9th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Hkcms

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

github.com/J-0k3r/test/blob/main/upload.pdf (Broken Link)
github.com/J-0k3r/CVE-2024-52677 (Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0

Frequently asked questions

What is CVE-2024-52677?: CVE-2024-52677 is a critical-severity vulnerability in Hkcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-11-20.
How severe is CVE-2024-52677?: Critical severity. CVSS v3 base score is 9.8 out of 10.