What is CVE-2023-37839?

CVE-2023-37839 is a critical-severity vulnerability in Dedecms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-07-13.

How severe is CVE-2023-37839?

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

Is CVE-2023-37839 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Dedecms

CVE-2023-37839

An arbitrary file upload vulnerability in /dede/file_manage_control.php of DedeCMS v5.7.109 allows attackers to execute arbitrary code via uploading a crafted PHP file.

Vulnerability class: Unrestricted File Upload

Published 2023-07-13 · 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: 0.012 (66.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Dedecms — versions 5.7.109

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

github.com/yezere/src/blob/main/Dedecms v5.7.109 Background Command Execution V… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-37839?: CVE-2023-37839 is a critical-severity vulnerability in Dedecms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-07-13.
How severe is CVE-2023-37839?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-37839 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.