Open Redirect Vulnerability in atjiu pybbs up to Version 6.0.0
CVE-2025-8813

5.1MEDIUM

Key Information:

Vendor

Atjiu

Status
Pybbs
Vendor
CVE Published:
10 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8813?

A significant open redirect vulnerability has been identified in atjiu pybbs versions up to 6.0.0. This flaw resides in the changeLanguage function of the IndexController.java file, where improper handling of the referer argument allows attackers to redirect users to untrusted locations. This manipulation can be executed remotely, exposing users to phishing scams or malicious sites. A patch has been created to address this issue, and it is essential for affected users to update their systems promptly to mitigate risks associated with this vulnerability.

Affected Version(s)

pybbs 6.0

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-2025-8813 - Proof of Concept

References

https://vuldb.com/?id.319342
vdb-entrytechnical-description
https://vuldb.com/?ctiid.319342
signaturepermissions-required
https://vuldb.com/?submit.622333
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ZAST.AI (VulDB User)
.
CVE-2025-8813 : Open Redirect Vulnerability in atjiu pybbs up to Version 6.0.0