Remote Code Execution Vulnerability in ChanCMS by yanyutao0402
CVE-2025-8266

5.3MEDIUM

Key Information:

Vendor

Yanyutao0402

Status
Chancms
Vendor
CVE Published:
28 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8266?

A security flaw exists in the ChanCMS software where the function getArticle in collect.js is vulnerable to deserialization attacks. Specifically, the manipulation of the targetUrl argument allows for remote code execution, leading to potential full system compromise. As the exploit has been publicly disclosed, users are urged to upgrade to version 3.1.3 to mitigate risks associated with this vulnerability.

Affected Version(s)

ChanCMS 3.1.0

ChanCMS 3.1.1

ChanCMS 3.1.2

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.

CVE-2025-8266 - Proof of Concept

References

https://vuldb.com/?id.317857
vdb-entrytechnical-description
https://vuldb.com/?ctiid.317857
signaturepermissions-required
https://vuldb.com/?submit.622170
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

ZAST.AI (VulDB User)
.