Which versions of Pybbs are affected by CVE-2025-8547?

Organizations using atjiu pybbs should be aware of moderate risk from CVE-2025-8547 rated CVSS 5.5. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-8547?

Yes, a public proof-of-concept exploit is available for CVE-2025-8547. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-8547?

Within 30 days: Identify affected systems running atjiu pybbs and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Pybbs CVE-2025-8547

Q: What is the CVSS score of CVE-2025-8547?

CVE-2025-8547 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.1%.

MEDIUM

Incorrect Privilege Assignment (CWE-266)

2025-08-05 cna@vuldb.com

Information Disclosure Pybbs Pybbs Project

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:05 vuln.today

Patch released

Mar 28, 2026 - 19:05 nvd

Patch available

PoC Detected

Sep 03, 2025 - 13:42 vuln.today

Public exploit code

CVE Published

Aug 05, 2025 - 06:15 nvd

MEDIUM 5.5

DescriptionCVE.org

A vulnerability has been found in atjiu pybbs up to 6.0.0 and classified as critical. This vulnerability affects unknown code of the component Email Verification Handler. The manipulation leads to improper authorization. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 044f22893bee254dc2bb0d30f614913fab3c22c2. It is recommended to apply a patch to fix this issue.

AnalysisAI

A vulnerability has been found in atjiu pybbs up to 6.0.0 and classified as critical. Rated medium severity (CVSS 5.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-266. A vulnerability has been found in atjiu pybbs up to 6.0.0 and classified as critical. This vulnerability affects unknown code of the component Email Verification Handler. The manipulation leads to improper authorization. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 044f22893bee254dc2bb0d30f614913fab3c22c2. It is recommended to apply a patch to fix this issue. Affected products include: Pybbs Project Pybbs. Version information: up to 6.0.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.