CVE-2026-33455 Livestatus injection in monitoring quicksearch
Authenticated attackers can inject Livestatus commands via search queries in Checkmk, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33455?
CVE-2026-33455 is a medium-severity code injection vulnerability in Checkmk Checkmk, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Livestatus injection in the monitoring quicksearch in Checkmk <2.5.0b4 allows an authenticated attacker to inject livestatus commands via the search query due to insufficient input sanitization in search filter plugins.
Weakness: CWE-140
Which versions are affected by CVE-2026-33455?
It affects 1 product.
Products include Checkmk Checkmk.
How do I fix CVE-2026-33455?
No fix has been published for CVE-2026-33455 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-33455 being exploited?
There is no known exploitation of CVE-2026-33455 in the wild and no public exploit code.
Other vulnerabilities in Checkmk Checkmk
- CVE-2025-39666 omd: Local privilege escalation when executing omd commands as root
- CVE-2024-8606 Fix 2FA bypass via RestAPI
- CVE-2022-46836 PHP code injection in watolib
- CVE-2025-32919 Privilege Escalation in Windows License plugin for Checkmk Windows Agent
- CVE-2024-28827 Privilege escalation in Windows agent
Sources
Also known as GHSA-p2v5-ghx9-jg75, UBUNTU-CVE-2026-33455.