What is the CVSS score of CVE-2025-65840?

CVE-2025-65840 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Publiccms are affected by CVE-2025-65840?

PublicCMS V5.202506.b contains a CSRF vulnerability in the editor controller that allows attackers to perform unauthorized actions on behalf of authenticated users.

Is there a public PoC exploit available for CVE-2025-65840?

Yes, a public proof-of-concept exploit is available for CVE-2025-65840. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-65840?

Within 24 hours: Inventory all PublicCMS V5.202506.b instances in your environment and assess user exposure. Within 7 days: Implement WAF rules to block suspicious cross-origin requests to CkEditorAdminController endpoints, and disable the affected editor feature if business-critical functionality permits. Within 30 days: Evaluate upgrade paths to patched versions, test in staging environments, and execute controlled production deployments with rollback plans.

Publiccms CVE-2025-65840

EUVD-2025-200083 HIGH

Cross-Site Request Forgery (CSRF) (CWE-352)

2025-12-01 cve@mitre.org

CSRF Publiccms

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 13:34 euvd

EUVD-2025-200083

Analysis Generated

Mar 15, 2026 - 13:34 vuln.today

PoC Detected

Dec 04, 2025 - 18:58 vuln.today

Public exploit code

CVE Published

Dec 01, 2025 - 21:15 nvd

HIGH 8.8

DescriptionCVE.org

PublicCMS V5.202506.b is vulnerable to Cross Site Request Forgery (CSRF) in the CkEditorAdminController.

Analysis

PublicCMS V5.202506.b is vulnerable to Cross Site Request Forgery (CSRF) in the CkEditorAdminController.

Technical ContextAI

Cross-Site Request Forgery forces authenticated users to perform unintended actions by tricking their browser into sending forged requests. This vulnerability is classified as Cross-Site Request Forgery (CSRF) (CWE-352).

RemediationAI

Implement anti-CSRF tokens for all state-changing operations. Use SameSite cookie attribute. Verify the Origin/Referer header on the server side.

CVE-2025-65840 vulnerability details – vuln.today

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Publiccms CVE-2025-65840

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

Analysis

Technical ContextAI

RemediationAI

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External POC / Exploit Code