CVE-2026-74039

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Source
https://cve.org/CVERecord?id=CVE-2026-74039
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74039.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-74039
Aliases
  • GHSA-5vh8-34r8-q74q
Published
2026-08-18T17:26:12Z
Modified
2026-10-03T03:30:54Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Wazuh 4.0.0 < 4.14.7 API DoS via Deeply Nested JSON auth_context
Details

Wazuh 4.0.0 before 4.14.7 and 5.0.0-beta2 contain a denial of service vulnerability that allows authenticated attackers with allow_run_as enabled to exhaust CPU resources by submitting arbitrarily deeply nested JSON structures to the POST /security/user/authenticate/run_as endpoint. Attackers can repeatedly submit malformed auth_context bodies with unlimited nesting depth to cause the API framework to consume excessive CPU, denying service to all other API consumers.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-1333",
        "CWE-770"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74039.json"
}
References

Affected packages

Git / github.com/wazuh/wazuh

Affected ranges

Type
GIT
Repo
https://github.com/wazuh/wazuh
Events
Introduced
8c2c62a6e9dcbcf2c792f7924e8cfdb26842820b
Fixed
a42268a27c555d9348d5598fb8751eaf4c8e9024
Introduced
cddd833300cb5af494ba7dab31192bae649eb184
Last Affected
b58b3b2552497639b1b2a2b23e8de87e4ce9cf02
Database specific
Show details 
{
    "cpe":  [
        "cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:*",
        "cpe:2.3:a:wazuh:wazuh:5.0.0:beta2:*:*:*:*:*:*"
    ],
    "extracted_events":  [
        {
            "introduced":  "4.0.0"
        },
        {
            "fixed":  "4.14.7"
        },
        {
            "introduced":  "5.0.0-beta1"
        },
        {
            "last_affected":  "5.0.0-beta1"
        },
        {
            "introduced":  "5.0.0-beta2"
        },
        {
            "last_affected":  "5.0.0-beta2"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Affected versions

5.*
5.0.0-beta1
5.0.0-beta2
v5.*
v5.0.0-beta1
v5.0.0-beta2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74039.json"