Vulnerability · Published Oct 25, 2026 · Assigned by VulDB

CVE-2026-116063DedeCMS update_guide.php require_once code injection

Medium 4.7

In plain English

A medium-severity code injection in DedeCMS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.3%top 83.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

A weakness has been identified in DedeCMS up to 5.7.118. Impacted is the function require_once of the file dede/update_guide.php. This manipulation of the argument vtime causes code injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
n/a	DedeCMS	5.7.118

Weakness: CWE-94, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

References

VDB-426146 | DedeCMS update_guide.php require_once code injection vdb-entry, technical-description
VDB-426146 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-116063 | CVE Analysis and Report third-party-advisory
Submit #999433 | DedeCMS 5.7.118 Code Injection third-party-advisory
https://github.com/SDshadow/cve related
https://github.com/SDshadow/cve/tree/main/DedeCMS/V5.7.118-update_guide-RCE/poc exploit, patch