CVE-2026-61550

CriticalCVSS 9.8/10Last modified Sep 24, 2026

Description

Icinga 2 is an open source monitoring system. From 2.8 until 2.14.9, 2.15.4, and 2.16.2, certificate update JSON-RPC message handling does not validate that the sender is a trusted endpoint. An unauthenticated network attacker able to connect to TCP port 5665 can replace the node certificate and trusted CA certificate, impersonate a trusted node, and take control of the node. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-862

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Icinga	icinga2	>= 2.8, < 2.14.9; >= 2.15.0, < 2.15.4; >= 2.16.0, < 2.16.2

References

Timeline

Published: Sep 18, 2026
Last modified: Sep 24, 2026
NVD status: Awaiting Analysis

Related CVEs from 2026

CVE-2026-615518.6Icinga 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 bec CVE-2026-615527.2Icinga 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 temp CVE-2026-615547.5emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the `http_poll` C2 transport accepts attacker-contro CVE-2026-615555.5OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR vers CVE-2026-615568.7LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. From 10.26.0 until 10.27.1, the strip_html filter in src CVE-2026-615599.6`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Starting in version 0.0.1 and prior to version 2.1.27, when the enviro CVE-2026-61569.8A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setIpQosRules of the file /cg CVE-2026-615609.8`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode (`SSE=true`) exposes a CVE-2026-615689.6`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint witho CVE-2026-61578.8A vulnerability was detected in Totolink A800R 4.1.2cu.5137_B20200730. This impacts the function setAppEasyWizardConfig in the library /lib/CVE-2026-615707.5MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 5.5.5 until 16.4.1, Merlin CVE-2026-615748.8authentik is an open-source identity provider. Prior to 2026.2.6 and 2026.5.5, the Remote Access Control endpoint list returns every configu