FKIE_CVE-2026-0543

Vulnerability from fkie_nvd - Published: 2026-01-13 21:15 - Updated: 2026-01-22 20:04
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.
References
security@elastic.cohttps://discuss.elastic.co/t/kibana-8-19-10-9-1-10-9-2-4-security-update-esa-2026-08/384523Vendor Advisory
Impacted products
Vendor Product Version
elastic kibana *
elastic kibana *
elastic kibana *
elastic kibana *
To clipboard 

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  "descriptions": [
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      "value": "Improper Input Validation (CWE-20) in Kibana\u0027s Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed."
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  "id": "CVE-2026-0543",
  "lastModified": "2026-01-22T20:04:20.370",
  "metrics": {
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          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
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      "source": "nvd@nist.gov",
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