What is CVE-2007-1966?

CVE-2007-1966 is a critical-severity vulnerability in Exv2 Content Management System, classified under Improper Authentication. CVSS score: 9.1/10. Published 2007-04-11.

How severe is CVE-2007-1966?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Exv2 Content Management System

CVE-2007-1966

Session fixation vulnerability in eXV2 CMS 2.0.4.3 and earlier allows remote attackers to hijack web sessions by setting the PHPSESSID cookie.

Vulnerability class: Broken Authentication

Published 2007-04-11 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.9% 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

Exv2 Content Management System — versions 2.0.4.3

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

marc.info/ (Vendor Advisory, mailing-list, Patch)
www.majorsecurity.de/index_2.php (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2007-1966?: CVE-2007-1966 is a critical-severity vulnerability in Exv2 Content Management System, classified under Improper Authentication. CVSS score: 9.1/10. Published 2007-04-11.
How severe is CVE-2007-1966?: Critical severity. CVSS v3 base score is 9.1 out of 10.