CVE-2025-65840: PublicCMS V5.202506.b is vulnerable to Cross Site Request Forgery (CSRF) in the CkEditorAdminController.

Routine

HIGH 8.8DOWNGRADE

CVE-2025-65840 is a high-severity flaw (CVSS 8.8) affecting publiccms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-352
Published	2025-12-01
Last modified	2026-10-26

Publisher (CNA): MITRE · Vendor: publiccms

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-01 21:15 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

publiccms publiccms DOWNGRADE

Affected: 5.202506.b

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.202506.b

1. Check installed version

apt-cache policy publiccms || rpm -q publiccms || publiccms --version

2. No fixed release: DOWNGRADE to a release before 5.202506.b (Debian / Ubuntu)

apt-cache madison publiccms sudo apt install publiccms=<VERSION_BEFORE_5.202506.b> sudo apt-mark hold publiccms

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list publiccms sudo dnf downgrade publiccms-<VERSION_BEFORE_5.202506.b> sudo dnf versionlock add publiccms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-65840?

publiccms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-65840 being exploited?

CVE-2025-65840 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-65840 affect?

CVE-2025-65840 affects publiccms. Severity is high (CVSS 8.8). PublicCMS V5.202506.b is vulnerable to Cross Site Request Forgery (CSRF) in the CkEditorAdminController.

How urgent is CVE-2025-65840?

Priority 38/100. High severity; Public exploit reference

References

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