CVE-2026-74034 Wazuh 4.1.0 before 4.14.8 Arbitrary File Read via upgrade_custom Command
Enrolled agents can exploit a missing origin check to read arbitrary files as root, potentially exposing sensitive system credentials.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-74034?
CVE-2026-74034 is a high-severity path traversal vulnerability in wazuh-manager, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wazuh from 4.1.0 before 4.14.8 contains a missing origin check in wm_agent_upgrade that allows enrolled agents to issue upgrade_custom commands with attacker-controlled file_path. Attackers can inject an upgrade_custom message over the agent channel to read arbitrary files as root, exfiltrating /etc/shadow and client.keys.
Weakness: CWE-862
Which versions are affected by CVE-2026-74034?
How do I fix CVE-2026-74034?
No fix has been published for CVE-2026-74034 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-74034 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-74034 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-r7hm-43xr-477j.