This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-61551 →
DEBIAN-CVE-2026-61551
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 nesti...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
icinga2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13
icinga2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.14.6-1+deb13u1"}]}]
Debian:14
icinga2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.2-1"}]}]
References
- advisory security-tracker.debian.org