CVE-2008-4526: Multiple directory traversal vulnerabilities in CCMS 3.1 allow remote attackers to include and execute arbitra

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HIGH 10.0DOWNGRADE

CVE-2008-4526 is a high-severity flaw (CVSS 10.0) affecting ccms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple directory traversal vulnerabilities in CCMS 3.1 allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in the skin parameter to (1) index.php, (2) forums.php, (3) admin.php, (4) header.php, (5) pages/story.php and (6) pages/poll.php.

Why this priority

Critical severity
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-22
Published	2008-10-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: customcms

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2008-10-09 18:14 UTCPublished CVE record published
2026-06-16 22:58 UTCUpdated Record last modified

customcms ccms DOWNGRADE

Affected: 3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison ccms sudo apt install ccms=<VERSION_BEFORE_3.1> sudo apt-mark hold ccms

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

dnf --showduplicates list ccms sudo dnf downgrade ccms-<VERSION_BEFORE_3.1> sudo dnf versionlock add ccms

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: CCMS 3.1 - 'skin' Local File Inclusion

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-2008-4526?

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

Is CVE-2008-4526 being exploited?

CVE-2008-4526 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-2008-4526 affect?

CVE-2008-4526 affects ccms. Severity is high (CVSS 10.0). Multiple directory traversal vulnerabilities in CCMS 3.1 allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in the skin parameter to (1) index.php, (2) forums.php, (3) admin.php, (4) header.php, (5) pages

How urgent is CVE-2008-4526?

Priority 62/100. Critical severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-6658 HIGH 7.5 DOWNGRADE SQL injection vulnerability in admin.php/vars.php in CustomCMS (CCMS) 3.1 Demo allows remote attackers to exec

References

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