A flaw was found in PCS (Pacemaker Configuration System). (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 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.
A flaw was found in PCS (Pacemaker Configuration System). (CVE-2026-84828)
Description
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.
CVSS v3.1
Score 6.5medium
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5g5g-4cqv-r2jw
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84828"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6aa2af49acd9273b49259d65
Added to database: 09/10/2026, 13:23:21 UTC
Last updated: 09/10/2026, 13:24:45 UTC
Views: 1
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