CVE-2006-3366: Multiple cross-site scripting (XSS) vulnerabilities in V3 Chat allow remote attackers to inject arbitrary web

Routine

LOW 2.6DOWNGRADE

CVE-2006-3366 is a low-severity flaw (CVSS 2.6) affecting v3 chat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in V3 Chat allow remote attackers to inject arbitrary web script or HTML via crafted HTML tags, as demonstrated by the IMG tag, in the (1) id parameter in (a) mail/index.php and (b) mail/reply.php; (2) login_id parameter in (c) members/is_online.php; (3) site_id parameter in (d) messenger/online.php, (e) messenger/search.php, and (f) messenger/profile.php; (4) contact_name parameter in messenger

Why this priority

Public exploit reference

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

Risk facts

CVSS score	2.6 (Low)
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Published	2006-07-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: v3 chat

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

Am I affected?

Timeline

2006-07-06 20:05 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

v3 chat v3 chat DOWNGRADE

Affected: beta

Fixed in: no fixed release known

Safe to downgrade to: a release before beta

1. Check installed version

apt-cache policy v3-chat || rpm -q v3-chat || v3-chat --version

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

apt-cache madison v3-chat sudo apt install v3-chat=<VERSION_BEFORE_beta> sudo apt-mark hold v3-chat

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

dnf --showduplicates list v3-chat sudo dnf downgrade v3-chat-<VERSION_BEFORE_beta> sudo dnf versionlock add v3-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.

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: V3 Chat Instant Messenger - '/mail/index.php?id' Cross-Site Scripting
Exploit-DB: V3 Chat Instant Messenger - '/mail/reply.php?id' Cross-Site Scripting
Exploit-DB: V3 Chat Instant Messenger - 'expire.php?cust_name' Cross-Site Scripting
Exploit-DB: V3 Chat Instant Messenger - 'online.php?site_id' Cross-Site Scripting
Exploit-DB: V3 Chat Instant Messenger - 'profile.php?site_id' Cross-Site Scripting
Exploit-DB: V3 Chat Instant Messenger - 'profileview.php?membername' Cross-Site Scripting
Exploit-DB: V3 Chat Instant Messenger - 'search.php' Multiple Cross-Site Scripting Vulnerabilities

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-2006-3366?

v3 chat: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-3366 being exploited?

CVE-2006-3366 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-2006-3366 affect?

CVE-2006-3366 affects v3 chat. Severity is low (CVSS 2.6). Multiple cross-site scripting (XSS) vulnerabilities in V3 Chat allow remote attackers to inject arbitrary web script or HTML via crafted HTML tags, as demonstrated by the IMG tag, in the (1) id parameter in (a) mail/index.php and (b) mail/r

How urgent is CVE-2006-3366?

Priority 34/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-3365 LOW 2.6 DOWNGRADE V3 Chat allows remote attackers to obtain the installation path via (1) an invalid id parameter to mail/index.

References

← Back to latest CVEs