CVE-2008-3566: Cross-site scripting (XSS) vulnerability in ZoneO-soft freeForum 1.7 allows remote attackers to inject arbitra

Routine

MEDIUM 4.3DOWNGRADE

CVE-2008-3566 is a medium-severity flaw (CVSS 4.3) affecting freeforum. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in ZoneO-soft freeForum 1.7 allows remote attackers to inject arbitrary web script or HTML via the acuparam parameter to (1) the default URI or (2) index.php, or (3) the PATH_INFO to index.php. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-79
Published	2008-08-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: zoneo-soft

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

Am I affected?

Timeline

2008-08-10 20:41 UTCPublished CVE record published
2026-06-16 22:56 UTCUpdated Record last modified

zoneo-soft freeforum DOWNGRADE

Affected: 1.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.7 (Debian / Ubuntu)

apt-cache madison freeforum sudo apt install freeforum=<VERSION_BEFORE_1.7> sudo apt-mark hold freeforum

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

dnf --showduplicates list freeforum sudo dnf downgrade freeforum-<VERSION_BEFORE_1.7> sudo dnf versionlock add freeforum

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: freeForum 1.7 - 'acuparam' Cross-Site Scripting

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-2008-3566?

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

Is CVE-2008-3566 being exploited?

CVE-2008-3566 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-2008-3566 affect?

CVE-2008-3566 affects freeforum. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in ZoneO-soft freeForum 1.7 allows remote attackers to inject arbitrary web script or HTML via the acuparam parameter to (1) the default URI or (2) index.php, or (3) the PATH_INFO to index.php. NOTE

How urgent is CVE-2008-3566?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-5932 MEDIUM 5.0 DOWNGRADE CodeAvalanche FreeForum stores sensitive information under the web root with insufficient access control, whic

References

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