Read the docs
TI-2016-00647 Aliases CVE-2016-0721GHSA-25mh-8263-4259

Session fixation vulnerability in pcsd in pcs before 0.9.157.

Priority MEDIUM 40CWE-384Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-384.

Summary

Session fixation vulnerability in pcsd in pcs before 0.9.157.

Why it matters now

EPSS 0.02388 84th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 2 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:clusterlabs:pcs:*:*:*:*:*:*:*:*up to 0.9.156VulnerableClusterLabs
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*22VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*23VulnerableFedoraproject
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:clusterlabs:pcs:*:*:*:*:*:*:*:* Versions up to 0.9.156 Vulnerable ·ClusterLabs
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 1 advisory

  • RHSA-2016:2596 Released 2016-11-03 · Red Hat rating Moderate
    pcs security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Server High Availability (v. 7) pcs-0.9.152-10.el7
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) pcs-0.9.152-10.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Server High Availability (v. 7)Fixed RHSA-2016:2596
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2016:2596

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-0721
  2. 2026-10-03 Alias added: GHSA-25mh-8263-4259

References

Patch 4

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences