What is CVE-2008-4122?

CVE-2008-4122 is a high-severity vulnerability in Joomla Joomla\!, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2008-12-19.

How severe is CVE-2008-4122?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Joomla Joomla\!

CVE-2008-4122

Joomla! 1.5.8 does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.

Published 2008-12-19 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (68.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Joomla Joomla\! — versions 1.5.8

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

www.securityfocus.com/archive/1/499354/100/0/threaded (mailing-list, VDB Entry, Third Party Advisory, Broken Link)
securityreason.com/securityalert/4794 (Third Party Advisory, third-party-advisory)
www.securityfocus.com/archive/1/499295/100/0/threaded (mailing-list, VDB Entry, Third Party Advisory, Broken Link)
int21.de/cve/CVE-2008-4122-joomla.html (Third Party Advisory)

Frequently asked questions

What is CVE-2008-4122?: CVE-2008-4122 is a high-severity vulnerability in Joomla Joomla\!, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2008-12-19.
How severe is CVE-2008-4122?: High severity. CVSS v3 base score is 7.5 out of 10.