CVE-2006-3971: Cross-site scripting (XSS) vulnerability in visitor/livesupport/chat.php in Scott Weedon Ajax Chat, possibly 0

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MEDIUM 6.8DOWNGRADE

CVE-2006-3971 is a medium-severity flaw (CVSS 6.8) affecting ajax chat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in visitor/livesupport/chat.php in Scott Weedon Ajax Chat, possibly 0.1, allows remote attackers to inject arbitrary web script or HTML via the userid parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2006-08-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: scott weedon

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

Am I affected?

Timeline

2006-08-02 16:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

scott weedon ajax chat DOWNGRADE

Affected: 0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1

1. Check installed version

apt-cache policy ajax-chat || rpm -q ajax-chat || ajax-chat --version

2. No fixed release: DOWNGRADE to a release before 0.1 (Debian / Ubuntu)

apt-cache madison ajax-chat sudo apt install ajax-chat=<VERSION_BEFORE_0.1> sudo apt-mark hold ajax-chat

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

dnf --showduplicates list ajax-chat sudo dnf downgrade ajax-chat-<VERSION_BEFORE_0.1> sudo dnf versionlock add ajax-chat

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-2006-3971?

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

Is CVE-2006-3971 being exploited?

CVE-2006-3971 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-2006-3971 affect?

CVE-2006-3971 affects ajax chat. Severity is medium (CVSS 6.8). Cross-site scripting (XSS) vulnerability in visitor/livesupport/chat.php in Scott Weedon Ajax Chat, possibly 0.1, allows remote attackers to inject arbitrary web script or HTML via the userid parameter.

How urgent is CVE-2006-3971?

Priority 48/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-3972 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in includes/operator_chattranscript.php in Scott Weedon Ajax Chat, possibly

References

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