CVE-2026-84828

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-10. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 14, 2026

Advisory Details (3)

Auto-updated Sep 10, 2026
Patch available. Sources: github_commit, redhat.
github_commit Patch Available

commit 9178b78d11ba (ClusterLabs/pcs)

Patch available: ClusterLabs/pcs v0.12.0a1 (contains commit 9178b78d11ba)

https://github.com/ClusterLabs/pcs/commit/9178b78d11baa70e700a5c0d9fc1c17f27d452fa
redhat

2527320 – (CVE-2026-84828) CVE-2026-84828 pcs: pcs: non-root haclient users can read arbitrary files via pcs host auth --token

https://bugzilla.redhat.com/show_bug.cgi?id=2527320
redhat Patch Available

CVE-2026-84828 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-84828

Vendor Advisories for CVE-2026-84828(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 23× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 19:37 UTCGHSA enrichment
  2. 2026-09-19 19:43 UTCEG score recompute
  3. 2026-09-19 19:43 UTCGHSA enrichment
  4. 2026-09-18 19:49 UTCEG score recompute
  5. 2026-09-18 19:49 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-17 19:54 UTCEG score recompute
  8. 2026-09-17 19:54 UTCGHSA enrichment
  9. 2026-09-17 19:32 UTCEPSS rescore
  10. 2026-09-16 18:10 UTCEG score recompute
  11. 2026-09-16 18:09 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 17:22 UTCEG score recompute
  15. 2026-09-15 17:22 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 17:28 UTCEG score recompute
  19. 2026-09-14 17:28 UTCGHSA enrichment
  20. 2026-09-14 16:45 UTCEG score recompute
  21. 2026-09-14 16:45 UTCGHSA enrichment
  22. 2026-09-14 14:38 UTCEG score recompute
  23. 2026-09-14 14:38 UTCGHSA enrichment
  24. 2026-09-13 14:44 UTCEG score recompute
  25. 2026-09-13 14:43 UTCGHSA enrichment
Show 10 more
  1. 2026-09-12 14:46 UTCEG score recompute
  2. 2026-09-12 14:46 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 14:51 UTCGHSA enrichment
  6. 2026-09-10 14:57 UTCEG score recompute
  7. 2026-09-10 14:57 UTCGHSA enrichment
  8. 2026-09-10 12:19 UTCEG score recompute
  9. 2026-09-10 11:32 UTCEG score recompute
  10. 2026-09-10 11:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84828?
CVE-2026-84828 is a medium vulnerability published on September 10, 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…
When was CVE-2026-84828 disclosed?
CVE-2026-84828 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84828 actively exploited?
CVE-2026-84828 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.9% of all scored CVEs.
What is the CVSS score of CVE-2026-84828?
CVE-2026-84828 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-84828?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84828, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-84828

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