CVE-2008-7210: directory.php in AJchat 0.10 allows remote attackers to bypass input validation and conduct SQL injection atta

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HIGH 7.5DOWNGRADE

CVE-2008-7210 is a high-severity flaw (CVSS 7.5) affecting ajchat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

directory.php in AJchat 0.10 allows remote attackers to bypass input validation and conduct SQL injection attacks via a numeric parameter with a value matching the s parameter's hash value, which prevents the associated $_GET["s"] variable from being unset. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vuln

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	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-89
Published	2009-09-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ming han

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

Am I affected?

Timeline

2009-09-11 16:30 UTCPublished CVE record published
2026-06-16 23:03 UTCUpdated Record last modified

ming han ajchat DOWNGRADE

Affected: 0.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.10 (Debian / Ubuntu)

apt-cache madison ajchat sudo apt install ajchat=<VERSION_BEFORE_0.10> sudo apt-mark hold ajchat

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

dnf --showduplicates list ajchat sudo dnf downgrade ajchat-<VERSION_BEFORE_0.10> sudo dnf versionlock add ajchat

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: AJchat 0.10 - 'unse' SQL Injection

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-2008-7210?

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

Is CVE-2008-7210 being exploited?

CVE-2008-7210 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-2008-7210 affect?

CVE-2008-7210 affects ajchat. Severity is high (CVSS 7.5). directory.php in AJchat 0.10 allows remote attackers to bypass input validation and conduct SQL injection attacks via a numeric parameter with a value matching the s parameter's hash value, which prevents the associated $_GET["s"] variable

How urgent is CVE-2008-7210?

Priority 48/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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