FKIE_CVE-2026-78591
Vulnerability from fkie_nvd - Published: 2026-09-02 15:17 - Updated: 2026-09-03 13:43
Severity
Summary
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) in the Kibana Fleet feature can lead to the unauthorized deletion of resources via Path Traversal (CAPEC-126). A low-privileged user could cause a subsequent action taken by a higher-privileged user in the Fleet administration interface to act on an unintended target, resulting in the deletion of resources including accounts with elevated privileges.
References
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Kibana",
"vendor": "Elastic",
"versions": [
{
"lessThanOrEqual": "8.19.16",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.3.5",
"status": "affected",
"version": "9.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.4.2",
"status": "affected",
"version": "9.4.0",
"versionType": "semver"
}
]
}
],
"source": "security@elastic.co"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F6988FF1-B650-4AE7-9C9B-C3533634FEC4",
"versionEndExcluding": "8.19.17",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
"matchCriteriaId": "ECDB67E0-0BAC-4158-A3A9-D38EB1CEAC8A",
"versionEndExcluding": "9.3.6",
"versionStartIncluding": "9.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A54D142F-22A7-4324-933D-02DCDBF32A4E",
"versionEndExcluding": "9.4.3",
"versionStartIncluding": "9.4.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) (CWE-22) in the Kibana Fleet feature can lead to the unauthorized deletion of resources via Path Traversal (CAPEC-126). A low-privileged user could cause a subsequent action taken by a higher-privileged user in the Fleet administration interface to act on an unintended target, resulting in the deletion of resources including accounts with elevated privileges."
}
],
"id": "CVE-2026-78591",
"lastModified": "2026-09-03T13:43:14.230",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.1,
"impactScore": 4.2,
"source": "security@elastic.co",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-78591",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-02T15:45:18.325815Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-02T15:17:40.570",
"references": [
{
"source": "security@elastic.co",
"tags": [
"Vendor Advisory"
],
"url": "https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-159/390114"
}
],
"sourceIdentifier": "security@elastic.co",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
],
"source": "security@elastic.co",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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