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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.5
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CWE
- CWE-732
- Published
- 2026-09-10
- Last modified
- 2026-09-10
Weakness type
Related vulnerabilities
- CVE-2026-19583 — Velociraptor Required Permissions bypass by using client monitoring queries
- CVE-2026-79617 — Improper Access Control Leading to Display Exposure in TÜBİTAK BİLGEM's Pardus LightDM Greeter
- CVE-2026-80054 — Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to...
- CVE-2026-82312 — OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated...
- CVE-2026-80112 — PassMark PerformanceTest, BurnInTest, and OSForensics Improper Access Control via DirectIo64.sys
- CVE-2021-43613 — SysPasswordDxe: Password hashes are exposed in runtime UEFI variables, leading to escalation of privilege
- CVE-2026-78604 — Incorrect Permission Assignment for Critical Resource in Elastic Agent Leading to Local Privilege Escalation to SYSTEM
- CVE-2026-84806 — Kimai before 2.63.0 Authorization Bypass via Team Access Endpoints