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Uncontrolled Recursion Affecting icinga2 package, versions <2.14.6-1+deb13u1

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.94% (60th percentile)

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  • Snyk IDSNYK-ECHOLATEST-ICINGA2-18610956
  • published11 Aug 2026
  • disclosed18 Sept 2026
Report a new vulnerability Found a mistake?

Introduced: 11 Aug 2026

CVE-2026-61551  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade Echo:latest icinga2 to version 2.14.6-1+deb13u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream icinga2 package and not the icinga2 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

Icinga 2 is an open source monitoring system. Prior to 2.14.9, 2.15.4, and 2.16.2, parsing deeply nested JSON can exhaust the call stack because nesting depth is not bounded. The affected JSON parsing paths are reachable by unauthenticated network clients through the Icinga 2 service on TCP port 5665, allowing a remote attacker to crash the process, while possible code execution has not been demonstrated. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.