CVE-2026-33434 Wazuh: Rate Limit Bypass via /events Endpoint
Attackers can bypass global rate limits on the /events endpoint to inject excessive events into the analysis daemon, circumventing administrative security controls.
- 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-2026-33434?
CVE-2026-33434 is a medium-severity vulnerability in Wazuh Wazuh, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 4.6.0 and above, prior to 4.14.5, a logic error in CheckRateLimitsMiddleware.dispatch() causes the /events endpoint rate check to unconditionally overwrite the general rate limit result. When the global max_request_per_minute is exceeded, requests to /events still succeed if the events-specific counter (hardcoded 30/min) has not been reached. This allows event injection into analysisd beyond the admin-configured global rate limit. This issue has been fixed in version 4.14.5.
Weakness: CWE-799
Which versions are affected by CVE-2026-33434?
It affects 1 product.
Products include Wazuh Wazuh.
How do I fix CVE-2026-33434?
No fix has been published for CVE-2026-33434 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-33434 being exploited?
There is no known exploitation of CVE-2026-33434 in the wild and no public exploit code.
Other vulnerabilities in Wazuh Wazuh
- CVE-2025-24016 Wazuh Server Deserialization of Untrusted Data
- CVE-2024-32038 Wazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2021-44079 Command injection in n/a
- CVE-2024-1243 Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft
- CVE-2026-61800 Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)
Sources
Also known as GHSA-37qc-8242-6crg.