CVE catalog

CVE-2026-84828

A flaw was found in PCS (Pacemaker Configuration System). A local attacker with membership in the 'haclient' group can exploit the 'pcs host auth --token' command to read the contents of arbitrary fil

[CVE catalog]

Severity
Medium · CVSS 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.14% · Oct 25, 2026

A flaw was found in PCS (Pacemaker Configuration System). A local attacker with membership in the 'haclient' group can exploit the 'pcs host auth --token' command to read the contents of arbitrary files on the filesystem, provided the files are shorter than 256 bytes. The file contents are read with root privileges by the pcsd daemon and can be exfiltrated by the attacker through subsequent cluster node communication. This allows disclosure of sensitive data such as API keys, tokens, or configuration secrets that would otherwise be inaccessible to the attacker.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianpcssid0.12.3.1-2fixed
Debianpcsforky0.12.3.1-2fixed
Debianpcstrixie0.12.0.2-1vulnerable
Debianpcsbookworm0.11.5-1+deb12u1vulnerable
Ubuntupcspro0.10.8-1ubuntu1vulnerable
Ubuntupcspro0.10.11-2ubuntu2vulnerable
Ubuntupcspro0.10.11-2ubuntu3vulnerable
Ubuntupcspro0.10.11-2ubuntu3+esm1vulnerable
Ubuntupcs24.040.11.6-1ubuntu1vulnerable
Ubuntupcs24.040.11.7-1ubuntu1vulnerable
Ubuntupcs24.040.11.7-1ubuntu1.1vulnerable
Ubuntupcs26.100.12.1-2ubuntu3vulnerable
Ubuntupcs26.100.12.2-2ubuntu1vulnerable
Ubuntupcs26.040.12.1-2ubuntu1vulnerable
Ubuntupcs26.040.12.1-2ubuntu3vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianpcssourcesid0.12.3.1-1not yet assignedNot reported[1147515]
Debianpcssourceforky0.12.3.1-1not yet assignedNot reported[1147515]
Debianpcssourcetrixie(unfixed)not yet assignedNot reported[1147515]
Debianpcssourcebookworm(unfixed)not yet assignedNot reported[1147515]

[Debian bug #1147515]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [pcs]Affected
    Details (2)

    • 0.11.5-1+deb12u1 · all · bookworm

      Affected

      nvd · pcs · debian · bookworm; nvd · pcs · debian · 12

    • 0.11.5-1+deb12u1 · all · bookworm

      Affected

      nvd · pcs · debian · bookworm; nvd · pcs · debian · 12

  • [pcs-snmp]Affected

    Source package: [pcs]

    Details (2)

    • 0.11.5-1+deb12u1 · all · bookworm

      Affected

      nvd · pcs · debian · bookworm; nvd · pcs · debian · 12

    • 0.11.5-1+deb12u1 · all · bookworm

      Affected

      nvd · pcs · debian · bookworm; nvd · pcs · debian · 12

[Debian 13 (Trixie)]

  • [pcs]Affected
    Details (2)

    • 0.12.0.2-1 · all · trixie

      Affected

      nvd · pcs · debian · 13

    • 0.12.0.2-1 · all · trixie

      Affected

      nvd · pcs · debian · 13

  • [pcs-snmp]Affected

    Source package: [pcs]

    Details (2)

    • 0.12.0.2-1 · all · trixie

      Affected

      nvd · pcs · debian · 13

    • 0.12.0.2-1 · all · trixie

      Affected

      nvd · pcs · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]