Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Icinga | icinga2 | >= 2.4, < 2.14.9, >= 2.15.0, < 2.15.4, >= 2.16.0, < 2.16.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | icinga2 | 2.16.2-1 | — |
| Debian 13 | icinga2 | 2.14.6-1+deb13u1 | — |
| Debian 12 | icinga2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 24.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 22.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 20.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 18.04 LTS | icinga2 | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | icinga2 | No fix yet | — |
Advisories 1
- WID-SEC-2026-2136 Icinga: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 20, 2026
References
- https://github.com/Icinga/icinga2/security/advisories/GHSA-jgqj-x5j9-vgcm
- https://github.com/Icinga/icinga2/pull/10910
- https://github.com/Icinga/icinga2/commit/125b7734e84d03f09b79d36c270152b11629a8c5
- https://github.com/Icinga/icinga2/commit/af4b36e6464b9b214bed270a53d6474cf91eb441
- https://github.com/Icinga/icinga2/commit/eec0d90e8303376fe772b3e4a04e3b064a44cf30
- https://github.com/Icinga/icinga2/commit/faf0450962ad678397991cfdf041810feafa71e7
- https://github.com/Icinga/icinga2/releases/tag/v2.14.9
- https://github.com/Icinga/icinga2/releases/tag/v2.15.4
- https://github.com/Icinga/icinga2/releases/tag/v2.16.2
- https://icinga.com/blog/icinga2-security-release-v2-16-2