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

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-25 · updated 2026-10-26
Weakness: CWE-74

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

DedeCMS: 5.7.118

References

https://github.com/SDshadow/cve
https://github.com/SDshadow/cve/tree/main/DedeCMS/V5.7.118-update_guide-RCE/poc
https://vuldb.com/cve/CVE-2026-116063
https://vuldb.com/submit/999433
https://vuldb.com/vuln/426146
https://vuldb.com/vuln/426146/cti

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