CVE-2026-33754

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Source

https://cve.org/CVERecord?id=CVE-2026-33754

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33754.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-33754

Aliases

GHSA-476v-28pp-5wg9

Published

2026-07-16T23:40:59.817Z

Modified

2026-07-22T05:32:23.083691426Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Wazuh: Unauthenticated cluster packet length leads to uncontrolled memory allocation (remote DoS)

Details

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.9.0 and above, prior to 4.14.5, a remote attacker can trigger memory exhaustion in the cluster protocol parser by sending a crafted message header with an arbitrarily large payload length. The length is trusted before authentication/decryption and used directly to allocate memory, allowing unauthenticated denial of service of the cluster service. This issue has been fixed in version 4.14.5.

Database specific

{
    "cwe_ids": [
        "CWE-400"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33754.json"
}

References

Affected packages

Git / github.com/wazuh/wazuh

Affected ranges

Type

GIT

Repo

https://github.com/wazuh/wazuh

Events

Introduced

18bac2de69f5a37e5c3c4e2dfbce5a0093042ea7

Fixed

460511d384aadc1d539caa6c4aa6a4234d68c9ba

Database specific

{
    "cpe": "cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "3.9.0"
        },
        {
            "fixed": "4.14.5"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33754.json"