Remote Code Execution Vulnerability in Sanluan PublicCMS 5.202506.d
CVE-2026-8739
6.9MEDIUM
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-8739?
A vulnerability in Sanluan PublicCMS version 5.202506.d allows remote attackers to manipulate the privatefile_key argument in the getSignKey function. This misconfiguration reveals a hard-coded cryptographic key, enabling unauthorized access and potential exploitation. Despite early warnings, the vendor has not responded to the disclosure, elevating concerns about the security of affected systems.
Affected Version(s)
PublicCMS 5.202506.d
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V4
Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved
Credit
vulnplusbot (VulDB User)
VulDB CNA Team