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TI-2018-04814 Aliases CVE-2018-6535GHSA-5535-phc2-4862

An issue was discovered in Icinga 2.x through 2.8.1.

Priority LOW 38Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

An issue was discovered in Icinga 2.x through 2.8.1. The lack of a constant-time password comparison function can disclose the password to an attacker.

Why it matters now

EPSS 0.01329 71st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*2.0.0 – 2.8.1VulnerableIcinga
  • cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.8.1 Vulnerable ·Icinga

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-6535
  2. 2026-10-03 Alias added: GHSA-5535-phc2-4862

References

Advisory 2

  • TI-2024-16337 Icinga Director configuration is susceptible to Cross-Site Request Forgery CVSS 3.1HIGH 8.3
  • TI-2012-05060 Multiple stack-based buffer overflows in the get_history function in history.cgi in… CVSS 2.0HIGH 7.5
  • TI-2013-05840 Multiple off-by-one errors in Nagios Core 3.5.1, 4.0.2, and earlier, and Icinga before… CVSS 2.0MEDIUM 5.5
  • TI-2024-32957 Icinga 2 has a TLS Certificate Validation Bypass for JSON-RPC and HTTP API Connections CVSS 3.1CRITICAL 9.8
  • TI-2025-30428 Icinga 2 certificate renewal might incorrectly renew an invalid certificate CVSS 4.0CRITICAL 9.3
  • TI-2021-12411 Passwords used to access external services inadvertently exposed through API CVSS 3.1HIGH 8.8
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences