CVE-2026-74039

mediumpriority · track · 0EPSS 0.006 · 46 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.56% (46th) EPSS

CVSS 6.5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · disclosure@vulncheck.comexploitability 2.8 · impact 3.6

v4.07.1highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · disclosure@vulncheck.com

v4.04.9mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1333USCWE-770US

affected products (4)

Products and version ranges known to be affected.

Open Source Wazuh <4.14.7all versionscert_bundDE
Open Source Wazuh< 4.14.7cert_bundDE
wazuh wazuh4.0.0 → 4.14.7nvdUScpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*
wazuh wazuh= 5.0.0nvdUScpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2883Wazuh: Mehrere SchwachstellenDeutsch2026-08-17csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Wazuh ausnutzen, um Dateien zu manipulieren, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um einen SQL-Injection Angriff durchzuführen, und um beliebigen Programmcode auszuführen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-08-18modified 2026-10-22

references (3) nvd

External citations — patches, advisories, analysis.

https://github.com/wazuh/wazuh/pull/37034Issue TrackingPatch
https://github.com/wazuh/wazuh/security/advisories/GHSA-5vh8-34r8-q74qExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/wazuh-api-dos-via-deeply-nested-json-auth-contextThird Party Advisory

scry

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