Auth bypass in Phpfreechat

CVE-2008-3428

Session fixation vulnerability in phpFreeChat 1.1 allows remote authenticated users to hijack web sessions by setting the session_id parameter to match the victim's nickid parameter.

Vulnerability class: Broken Authentication

Published 2008-07-31 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 6.5 (Medium). Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.012 (65.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Phpfreechat — versions 1.0, 1.1

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

secunia.com/advisories/31283 (Vendor Advisory, third-party-advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/44116 (vdb-entry)
www.securityfocus.com/bid/30462 (Patch, vdb-entry)
www.phpfreechat.net/changelog/1.2 (Patch)