JWT Handler Vulnerability in PerfreeBlog by Perfree
CVE-2025-5164

6.3MEDIUM

Key Information:

Vendor

Perfree

Status
Perfreeblog
Vendor
CVE Published:
26 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5164?

A vulnerability exists in PerfreeBlog 4.0.11 that affects the JwtUtil function of its JWT Handler component. This issue is characterized by the use of a hard-coded cryptographic key, which could potentially allow remote attackers to exploit the system. Although the complexity of carrying out the attack is notably high, the risk is amplified by the public disclosure of the vulnerability, leading to potential exploitation. Efforts to contact the vendor regarding this issue were met with silence, leaving users exposed to possible threats.

Affected Version(s)

PerfreeBlog 4.0.11

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-2025-5164 - Proof of Concept

References

https://vuldb.com/?id.310252
vdb-entrytechnical-description
https://vuldb.com/?ctiid.310252
signaturepermissions-required
https://vuldb.com/?submit.576433
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Qianyi (VulDB User)
.