What is CVE-2025-65840?

CVE-2025-65840 is a high-severity vulnerability in Publiccms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2025-12-01.

How severe is CVE-2025-65840?

High severity. CVSS v3 base score is 8.8 out of 10.

CSRF in Publiccms

CVE-2025-65840

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

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2025-12-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Publiccms — versions 5.202506.b

Weakness classification (CWE)

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

References

github.com/Hyperkopite/PublicCMS_Vulns/blob/main/CSRF_1.md (Exploit, Third Party Advisory)
github.com/sanluan/PublicCMS/issues/102 (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2025-65840?: CVE-2025-65840 is a high-severity vulnerability in Publiccms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2025-12-01.
How severe is CVE-2025-65840?: High severity. CVSS v3 base score is 8.8 out of 10.