What is CVE-2016-0721?

CVE-2016-0721 is a high-severity vulnerability in Clusterlabs Pcs, classified under Session Fixation. CVSS score: 8.1/10. Published 2017-04-21.

How severe is CVE-2016-0721?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Clusterlabs Pcs

CVE-2016-0721

Session fixation vulnerability in pcsd in pcs before 0.9.157.

Published 2017-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.023 (82.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-384 — Session Fixation

References

github.com/ClusterLabs/pcs/commit/bc6ad9086857559db57f4e3e6de66762291c0774 (Patch)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
github.com/ClusterLabs/pcs/commit/e9b28833d54a47ec441f6dbad0db96e1fc662a5b (Patch)
lists.fedoraproject.org/pipermail/package-announce/2016-March/178384.html (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/97977 (VDB Entry, Third Party Advisory, vdb-entry)
rhn.redhat.com/errata/RHSA-2016-2596.html (vendor-advisory, Third Party Advisory)
github.com/ClusterLabs/pcs/commit/acdbbe8307e6f4a36b2c7754765e732e43fe8d17 (Patch)
lists.fedoraproject.org/pipermail/package-announce/2016-March/178261.html (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2016-0721?: CVE-2016-0721 is a high-severity vulnerability in Clusterlabs Pcs, classified under Session Fixation. CVSS score: 8.1/10. Published 2017-04-21.
How severe is CVE-2016-0721?: High severity. CVSS v3 base score is 8.1 out of 10.