icinga2: Icinga 2 is an open source monitoring system
CVE-2026-61551 is fixed in icinga2 on 1 platform, first by DEBIAN-CVE-2026-61551, released August 10, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| icinga2 · Debian 13.5 (trixie) | 2.14.6-1+deb13u1 | DEBIAN-CVE-2026-61551 | Aug 10, 2026 |
| icinga2 · Debian 14 | 2.16.2-1 | DEBIAN-CVE-2026-61551 | Aug 10, 2026 |
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