CVE-2026-44256 Details
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.4.0 until 4.14.6 and 5.0.0-beta2, api/api/middlewares.py decodes the Basic authentication username before credential validation and passes it to the access logger without neutralizing control characters. api/api/alogging.py interpolates that value into the plain-text API log. An unauthenticated attacker can include carriage returns or line feeds in the username to forge entries, obscure activity, or poison systems that consume the plain-text audit log. The JSON log format is not affected because JSON serialization escapes these characters. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
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Exploit prediction scoring system (EPSS) score for CVE-2026-44256
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%).
0.48 Probability of exploitation activity being observed over the next 30 days (42st percentile)
CVSS score for CVE-2026-44256
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.
5.3 Medium
Products affected by CVE-2026-44256
Wazuh 4.10.1
Wazuh 4.11.0
Wazuh 4.11.1
Wazuh 4.11.2
Wazuh 4.9.0
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-2026-44256 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-2026-44256 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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