# 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.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jul 2026
- **Updated:** 18 Jul 2026
- **Also known as:** GHSA-37qc-8242-6crg

## 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 (Improper Control of Interaction Frequency)

## Which versions are affected by CVE-2026-33434?

It affects 1 product.


Products: 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](https://insights.sbomify.com/CVE-2025-24016/): Wazuh Server Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2024-32038](https://insights.sbomify.com/CVE-2024-32038/): Wazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2021-44079](https://insights.sbomify.com/CVE-2021-44079/): Command injection in n/a (critical 9.8)
- [CVE-2024-1243](https://insights.sbomify.com/CVE-2024-1243/): Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft (critical 9.5)
- [CVE-2026-61800](https://insights.sbomify.com/CVE-2026-61800/): Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893) (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33434 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-33434 in the wild and no public exploit code.

Affected product: Wazuh Wazuh. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-33434/ (Markdown: https://insights.sbomify.com/CVE-2026-33434/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33434
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33434
- OSV: https://osv.dev/vulnerability/CVE-2026-33434

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33434/
Summaries are generated and may contain mistakes; the official description above is the record.