Improper Authorization Vulnerability in atjiu pybbs Email Verification Handler
CVE-2025-8547

6.9MEDIUM

Key Information:

Vendor

Atjiu

Status
Pybbs
Vendor
CVE Published:
5 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8547?

The atjiu pybbs software, up to version 6.0.0, contains a vulnerability in the Email Verification Handler that allows for improper authorization. This issue enables remote attackers to exploit the system, potentially leading to unauthorized access and manipulation of sensitive information. A patch has been released to mitigate this security risk, and it is crucial for users to apply it to protect their systems.

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Deploy the Patch

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-2025-8547 - Proof of Concept

References

https://vuldb.com/?id.318676
vdb-entry
https://vuldb.com/?ctiid.318676
signaturepermissions-required
https://vuldb.com/?submit.622180
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
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

ZAST.AI (VulDB User)
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