CVE-2026-0566: A security vulnerability has been detected in code-projects Content Management System 1.0

Routine

MEDIUM 4.7DOWNGRADE

CVE-2026-0566 is a medium-severity flaw (CVSS 4.7) affecting content management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A security vulnerability has been detected in code-projects Content Management System 1.0. Impacted is an unknown function of the file /admin/edit_posts.php. The manipulation of the argument image leads to unrestricted upload. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-284, CWE-434
Published	2026-01-02
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: code-projects

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-02 17:16 UTCPublished CVE record published
2026-06-17 10:10 UTCUpdated Record last modified

code-projects content management system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy content-management-system || rpm -q content-management-system || content-management-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison content-management-system sudo apt install content-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold content-management-system

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

dnf --showduplicates list content-management-system sudo dnf downgrade content-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add content-management-system

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-2026-0566?

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

Is CVE-2026-0566 being exploited?

CVE-2026-0566 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-2026-0566 affect?

CVE-2026-0566 affects content management system. Severity is medium (CVSS 4.7). A security vulnerability has been detected in code-projects Content Management System 1.0. Impacted is an unknown function of the file /admin/edit_posts.php. The manipulation of the argument image leads to unrestricted upload. The attack is

How urgent is CVE-2026-0566?

Priority 29/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-5333 HIGH 7.3 DOWNGRADE A security flaw has been discovered in DefaultFuction Content-Management-System 1.0
CVE-2026-0546 HIGH 7.3 DOWNGRADE A vulnerability was determined in code-projects Content Management System 1.0
CVE-2025-15197 MEDIUM 4.7 DOWNGRADE DOWNGRADE A security flaw has been discovered in code-projects/anirbandutta9 Content Management System and News-Buzz 1.0
CVE-2026-0567 HIGH 7.3 DOWNGRADE A vulnerability was detected in code-projects Content Management System 1.0
CVE-2026-0565 HIGH 7.3 DOWNGRADE A weakness has been identified in code-projects Content Management System 1.0

References

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