What is CVE-2026-116253?

CVE-2026-116253 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 2026-10-26.

How severe is CVE-2026-116253?

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

RCE in Dedecms

CVE-2026-116253

A vulnerability was determined in DedeCMS 5.7.118. This vulnerability affects the function common.inc.php::_RunMagicQuotes of the file plus/ad_js.php of the component Advertisement Rendering. Executing a manipulation of the argument aid can lead to code injection. The attack can be executed remotely.

Published 2026-10-26 · last modified 2026-10-26.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Dedecms — versions 5.7.118

Weakness classification (CWE)

References

vuldb.com/vuln/426287 (technical-description, vdb-entry)
vuldb.com/vuln/426287/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-116253 (third-party-advisory)
vuldb.com/submit/1009307 (third-party-advisory)

Frequently asked questions

What is CVE-2026-116253?: CVE-2026-116253 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 2026-10-26.
How severe is CVE-2026-116253?: High severity. CVSS v3 base score is 7.3 out of 10.