What is CVE-2018-11571?

CVE-2018-11571 is a high-severity vulnerability in Clippercms, classified under Session Fixation. CVSS score: 8.8/10. Published 2018-05-31.

How severe is CVE-2018-11571?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Clippercms

CVE-2018-11571

ClipperCMS 1.3.3 allows Session Fixation.

Published 2018-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.3th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.3% 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

Clippercms — versions 1.3.3

Weakness classification (CWE)

CWE-384 — Session Fixation

References

github.com/ClipperCMS/ClipperCMS/issues/486 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-11571?: CVE-2018-11571 is a high-severity vulnerability in Clippercms, classified under Session Fixation. CVSS score: 8.8/10. Published 2018-05-31.
How severe is CVE-2018-11571?: High severity. CVSS v3 base score is 8.8 out of 10.