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Vulnerability record · CVE-2022-2735 · published 6 September 2022

CVE-2022-2735: Clusterlabs pcs incorrect default permissions vulnerability

Clusterlabs · Pcs

A vulnerability was found in the PCS project. This issue occurs due to incorrect permissions on a Unix socket used for internal communication between PCS daemons. A privilege escalation could happen by obtaining an authentication token for a hacluster user. With the "hacluster" token, this flaw allows an attacker to have complete control over the cluster managed by PCS.

7.8 CVSS 3.1 High EPSS 0.32% · top 77.8% CWE-276 · Incorrect default permissions
7.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in the PCS project. This issue occurs due to incorrect permissions on a Unix socket used for internal communication between PCS daemons. A privilege escalation could happen by obtaining an authentication token for a hacluster user. With the "hacluster" token, this flaw allows an attacker to have complete control over the cluster managed by PCS.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2022-2735 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2116815 Issue TrackingPatchThird Party Advisory
https://www.debian.org/security/2022/dsa-5226 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/09/01/4 Mailing ListRelease NotesThird Party Advisory
https://access.redhat.com/security/cve/CVE-2022-2735 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2116815 Issue TrackingPatchThird Party Advisory
https://www.debian.org/security/2022/dsa-5226 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/09/01/4 Mailing ListRelease NotesThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-2735), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.