Improper Authorization in veal98 小牛肉 Echo Community System by veal98
CVE-2025-3567

5.3MEDIUM

Key Information:

Vendor
Veal98 小牛肉
Status
Echo 开源社区系统
Vendor
CVE Published:
14 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A significant vulnerability has been identified within the veal98 小牛肉 Echo Community System version 4.2. The flaw is located in the preHandle function of the LoginTicketInterceptor class, which is responsible for handling user login tickets. This weakness allows unauthorized users to manipulate the authorization flow, potentially granting access to restricted resources without proper credentials. The vulnerability can be exploited remotely, posing a serious risk to the integrity of user sessions. As the exploit is publicly disclosed, prompt action is necessary to mitigate potential attacks.

Affected Version(s)

Echo 开源社区系统 4.2

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-2025-3567 - Proof of Concept

References

https://vuldb.com/?id.304608
vdb-entrytechnical-description
https://vuldb.com/?ctiid.304608
signaturepermissions-required
https://vuldb.com/?submit.549537
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
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

Caigo (VulDB User)
.