CVE-2026-74035 Wazuh 4.6.0 before 4.14.8 Authentication Bypass via Empty Password in update_user
A delegated administrator can bypass authentication checks to take over the superuser account by sending an empty password to the user update endpoint.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-74035?
CVE-2026-74035 is a high-severity authentication bypass vulnerability in wazuh-manager, published on 13 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Wazuh versions from 4.6.0 before 4.14.8 contain an authentication bypass vulnerability where security.update_user places the reserved user guard and password policy inside a falsy truthiness check. A delegated user administrator can send an empty password to the user update endpoint, bypassing the reserved user guard to take over the wazuh superuser account and authenticate with empty credentials.
Weakness: CWE-863
Which versions are affected by CVE-2026-74035?
How do I fix CVE-2026-74035?
No fix has been published for CVE-2026-74035 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-2026-74035 being exploited?
There is no known exploitation of CVE-2026-74035 in the wild and no public exploit code.
Sources
Also known as GHSA-27gv-q7q6-f5qh, GHSA-fv2h-v32g-xqfg.