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TI-2026-12817 Aliases CVE-2026-15227GHSA-m93w-q9x6-3m46

Missing Authorization Allows Editing of Foreign Reports

Priority LOW 24CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00351 28th percentileScored 2026-11-07
Fix Fixed Checkmk (Checkmk GmbH): 2.5.0p10, 2.4.0p35, 2.3.0p49

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Checkmk GmbHCheckmk2.5.0 to before 2.5.0p10; 2.4.0 to before 2.4.0p35; 2.3.0 to before 2.3.0p49; 2.2.02.5.0p10, 2.4.0p35, 2.3.0p49Patch availableCNA
  • Checkmk VendorCheckmk GmbH Affected 2.5.0 to before 2.5.0p10; 2.4.0 to before 2.4.0p35; 2.3.0 to before 2.3.0p49; 2.2.0 Fixed in 2.5.0p10, 2.4.0p35, 2.3.0p49 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*——Checkmk GmbH
  • cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* Versions — — ·Checkmk GmbH

Remediation

  • Fix · CNA Checkmk (Checkmk GmbH) Fixed in 2.5.0p10, 2.4.0p35, 2.3.0p49

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-15227
  2. 2026-10-03 Alias added: GHSA-m93w-q9x6-3m46

References

  • TI-2025-26345 Cross Site Scripting through compromised remote site CVSS 4.0HIGH 8.5
  • TI-2025-40190 Cross-site scripting in HTML logs of Synthetic Monitoring test services CVSS 4.0HIGH 7.3
  • TI-2024-12762 Checkmk NagVis Remote Code Execution CVSS 3.1HIGH 7.2
  • TI-2024-12761 Checkmk NagVis Reflected Cross-site Scripting CVSS 3.1MEDIUM 5.4
  • TI-2024-19037 Brute-force protection ineffective for some login methods CVSS 3.1CRITICAL 9.8
  • TI-2024-05712 local IP restriction of internal HTTP endpoints CVSS 3.1CRITICAL 9.8
See all 128 →

Sources