Code injection in DedeCMS dede/update_guide.php via vtime argument
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.
Summary
DedeCMS up to 5.7.118 is affected. Manipulating the vtime argument in the require_once call in dede/update_guide.php lets attackers inject code (CWE-94). A remote attacker with high privileges can exploit it, and a public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for DedeCMS.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-25 Threatist record created from CVE-2026-116063
- 2026-10-26 CISA SSVC decision points changed
- 2026-10-26 Priority changed: LOW → MEDIUM
- 2026-10-27 Alias added: GHSA-g9jw-2c37-v8j4
References
Sources
- CVE-2026-116063 · CVE Program
- CVE-2026-116063 · NVD
- FIRST EPSS
- GHSA-g9jw-2c37-v8j4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences