Cross Site Scripting Vulnerability in atjiu pybbs Affected by User Input Processing
CVE-2025-8554

4.8MEDIUM

Key Information:

Vendor

Atjiu

Status
Pybbs
Vendor
CVE Published:
5 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8554?

A significant cross-site scripting vulnerability has been identified in atjiu pybbs versions up to 6.0.0, specifically affecting the /admin/user/list endpoint. This vulnerability arises from improper handling of user input, namely the Username argument, which can allow attackers to execute malicious scripts in the context of users' browsers. This exploit can be initiated remotely, posing a risk to users interacting with the compromised application. It is vital for users and administrators of atjiu pybbs to apply the recommended patch (commit 2fe4a51afbce0068c291bc1818bbc8f7f3b01a22) to mitigate the risk associated with this vulnerability.

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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-2025-8554 - Proof of Concept

References

https://vuldb.com/?id.318683
vdb-entrytechnical-description
https://vuldb.com/?ctiid.318683
signaturepermissions-required
https://vuldb.com/?submit.622198
third-party-advisory

CVSS V4

Score:
4.8
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)
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