CVE-2026-74039 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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-74039
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.56 Probability of exploitation activity being observed over the next 30 days (46th percentile)
CVSS score for CVE-2026-74039
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
6.5 Medium
Products affected by CVE-2026-74039
Wazuh 4.9.1
Wazuh 4.9.2
Wazuh 4.10.0
Wazuh 4.10.2
Wazuh 4.10.3
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-74039 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 201 34.30%
DE 58 9.90%
ID 42 7.17%
SG 40 6.83%
FR 33 5.63%
IN 30 5.12%
GB 26 4.44%
CA 11 1.88%
BR 10 1.71%
NL 8 1.37%

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CVE-2026-74039 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 436 91.40%
Telecommunications 26 5.45%
Government/Politics 6 1.26%
Education 4 0.84%
Manufacturing 2 0.42%
Business Services 2 0.42%
Tourism/Hospitality 1 0.21%

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