CVE-2009-1486: Directory traversal vulnerability in pmscript.php in Flatchat 3.0 allows remote attackers to include and execu

This month

HIGH 7.5DOWNGRADE

CVE-2009-1486 is a high-severity flaw (CVSS 7.5) affecting flatchat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in pmscript.php in Flatchat 3.0 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the with parameter.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.3% (top 16%)
CISA exploited list	No
Weakness	CWE-22
Published	2009-04-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ninjadesigns

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

Am I affected?

Timeline

2009-04-29 18:30 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

ninjadesigns flatchat DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison flatchat sudo apt install flatchat=<VERSION_BEFORE_3.0> sudo apt-mark hold flatchat

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

dnf --showduplicates list flatchat sudo dnf downgrade flatchat-<VERSION_BEFORE_3.0> sudo dnf versionlock add flatchat

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: Flatchat 3.0 - 'pmscript.php' 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-2009-1486?

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

Is CVE-2009-1486 being exploited?

CVE-2009-1486 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-2009-1486 affect?

CVE-2009-1486 affects flatchat. Severity is high (CVSS 7.5). Directory traversal vulnerability in pmscript.php in Flatchat 3.0 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the with parameter.

How urgent is CVE-2009-1486?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

← Back to latest CVEs