RCE in Icinga Icinga2

CVE-2026-61552

Icinga 2 is an open source monitoring system. From 2.4 until 2.14.9, 2.15.4, and 2.16.2, the /v1/objects API writes attacker-controlled template names into generated configuration without escaping them. An authenticated ApiUser with an objects/create/* permission can inject Icinga 2 DSL configuration, escape the intended object, create additional objects, and exceed the user's assigned privileges. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.

Vulnerability class: RCE (Remote Code Execution)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-61552: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

  • Icinga Icinga2 — versions >= 2.15.0, < 2.15.4, >= 2.16.0, < 2.16.2, >= 2.4, < 2.14.9

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-61552?
CVE-2026-61552 is a high-severity vulnerability in Icinga Icinga2, classified under Code Injection. CVSS score: 7.2/10. Published 2026-09-18.
How severe is CVE-2026-61552?
High severity. CVSS v3 base score is 7.2 out of 10.