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CVE-2026-61551

Icinga 2: Stack overflow via deeply nested JSON objects PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Icinga / icinga2affected < 2.14.9; affected >= 2.15.0, < 2.15.4; affected >= 2.16.0, < 2.16.2

CWE

CWE-674

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.