CVE-2008-5783: admin/index.php in V3 Chat Live Support 3.0.4 allows remote attackers to bypass authentication and gain admini

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HIGH 7.5DOWNGRADE

CVE-2008-5783 is a high-severity flaw (CVSS 7.5) affecting v3 chat live support. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

admin/index.php in V3 Chat Live Support 3.0.4 allows remote attackers to bypass authentication and gain administrative access by setting the admin cookie to 1.

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	3.4% (top 11%)
CISA exploited list	No
Weakness	CWE-287
Published	2008-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: v3chat

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

Am I affected?

Timeline

2008-12-31 11:30 UTCPublished CVE record published
2026-06-16 23:00 UTCUpdated Record last modified

v3chat v3 chat live support DOWNGRADE

Affected: 3.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0.4 (Debian / Ubuntu)

apt-cache madison v3-chat-live-support sudo apt install v3-chat-live-support=<VERSION_BEFORE_3.0.4> sudo apt-mark hold v3-chat-live-support

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

dnf --showduplicates list v3-chat-live-support sudo dnf downgrade v3-chat-live-support-<VERSION_BEFORE_3.0.4> sudo dnf versionlock add v3-chat-live-support

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 Live Support 3.0.4 - Insecure Cookie Handling
Exploit-DB: V3 Chat Profiles/Dating Script 3.0.2 - Insecure Cookie Handling

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-2008-5783?

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

Is CVE-2008-5783 being exploited?

CVE-2008-5783 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-2008-5783 affect?

CVE-2008-5783 affects v3 chat live support. Severity is high (CVSS 7.5). admin/index.php in V3 Chat Live Support 3.0.4 allows remote attackers to bypass authentication and gain administrative access by setting the admin cookie to 1.

How urgent is CVE-2008-5783?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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