What is CVE-2026-94004?

CVE-2026-94004 is a high-severity vulnerability in Dedecms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-09-20.

How severe is CVE-2026-94004?

High severity. CVSS v3 base score is 7.3 out of 10.

RCE in Dedecms

CVE-2026-94004

A vulnerability was found in DedeCMS up to 5.7.118. The affected element is an unknown function of the file plus/mytag_js.php. The manipulation of the argument aid results in code injection. The attack can be launched remotely. The exploit has been made public and could be used.

Published 2026-09-20 · last modified 2026-09-21.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (44.0th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Dedecms — versions 5.7.118

Weakness classification (CWE)

References

vuldb.com/vuln/407953 (technical-description, vdb-entry)
vuldb.com/vuln/407953/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-94004 (third-party-advisory)
vuldb.com/submit/944743 (third-party-advisory)

Frequently asked questions

What is CVE-2026-94004?: CVE-2026-94004 is a high-severity vulnerability in Dedecms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-09-20.
How severe is CVE-2026-94004?: High severity. CVSS v3 base score is 7.3 out of 10.