CVE-2023-31211 Disabled automation users could still authenticate
Attackers can authenticate using disabled automation user credentials in Checkmk, bypassing intended access restrictions.
- 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-2023-31211?
CVE-2023-31211 is a high-severity authentication bypass vulnerability in Checkmk Checkmk, published on 12 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Insufficient authentication flow in Checkmk before 2.2.0p18, 2.1.0p38 and 2.0.0p39 allows attacker to use locked credentials
Which versions are affected by CVE-2023-31211?
It affects 2 products.
Products include Checkmk Checkmk, Tribe29 Checkmk.
How do I fix CVE-2023-31211?
No fix has been published for CVE-2023-31211 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-31211 being exploited?
There is no known exploitation of CVE-2023-31211 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-j8hh-2v2c-wqmv, UBUNTU-CVE-2023-31211.