CVE-2026-78607 (GCVE-0-2026-78607)
Vulnerability from cvelistv5 – Published: 2026-09-01 19:20 – Updated: 2026-09-01 19:41
VLAI
EPSS
VEX
Title
Missing Authorization in Elasticsearch Leading to Information Disclosure
Summary
Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 19:41 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
8.0.0 , ≤ 8.19.18
(semver)
Affected: 9.0.0 , ≤ 9.3.7 (semver) Affected: 9.4.0 , ≤ 9.4.3 (semver) Affected: 9.5.0 (semver) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-78607",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T19:41:13.697598Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T19:41:19.721Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Elasticsearch",
"vendor": "Elastic",
"versions": [
{
"lessThanOrEqual": "8.19.18",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.3.7",
"status": "affected",
"version": "9.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.4.3",
"status": "affected",
"version": "9.4.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eMissing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed.\u003c/p\u003e"
}
],
"value": "Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T19:20:34.174Z",
"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"shortName": "elastic"
},
"references": [
{
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-9-5-1-security-update-esa-2026-143/390094"
}
],
"source": {
"discovery": "Elastic"
},
"title": "Missing Authorization in Elasticsearch Leading to Information Disclosure",
"x_generator": {
"engine": "Elastic CVE Publisher 1.0.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"assignerShortName": "elastic",
"cveId": "CVE-2026-78607",
"datePublished": "2026-09-01T19:20:34.174Z",
"dateReserved": "2026-08-24T21:13:52.890Z",
"dateUpdated": "2026-09-01T19:41:19.721Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-78607",
"date": "2026-09-24",
"epss": "0.00328",
"percentile": "0.23116"
},
"microsoft_vex": {
"current_release_date": "2026-09-09T01:54:25.000Z",
"cve": "CVE-2026-78607",
"id": "msrc_CVE-2026-78607",
"initial_release_date": "2026-09-03T01:03:42.000Z",
"product_status:known_not_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Missing Authorization in Elasticsearch Leading to Information Disclosure",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-78607.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Elasticsearch",
"vendor": "Elastic",
"versions": [
{
"lessThanOrEqual": "8.19.18",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.3.7",
"status": "affected",
"version": "9.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.4.3",
"status": "affected",
"version": "9.4.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver"
}
]
}
],
"source": "security@elastic.co"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "96C3FAF7-B843-402F-A3C1-543138429355",
"versionEndExcluding": "8.19.19",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EDAA3E3F-D854-4D29-BB31-20A947C9EB1A",
"versionEndExcluding": "9.3.8",
"versionStartIncluding": "9.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "54F14824-0093-4DA8-95AD-ED8F481722FC",
"versionEndExcluding": "9.4.4",
"versionStartIncluding": "9.4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:elastic:elasticsearch:9.5.0:*:*:*:*:*:*:*",
"matchCriteriaId": "39484E9B-30B0-4D11-912D-B07373083EE5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed."
}
],
"id": "CVE-2026-78607",
"lastModified": "2026-09-02T18:50:29.990",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 2.5,
"source": "security@elastic.co",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 4.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-78607",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T19:41:13.697598Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-01T20:17:24.030",
"references": [
{
"source": "security@elastic.co",
"tags": [
"Vendor Advisory"
],
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-9-5-1-security-update-esa-2026-143/390094"
}
],
"sourceIdentifier": "security@elastic.co",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-862"
}
],
"source": "security@elastic.co",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-78607",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T19:41:13.697598Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T19:41:16.577Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Elasticsearch",
"vendor": "Elastic",
"versions": [
{
"lessThanOrEqual": "8.19.18",
"status": "affected",
"version": "8.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.3.7",
"status": "affected",
"version": "9.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.4.3",
"status": "affected",
"version": "9.4.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eMissing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed.\u003c/p\u003e"
}
],
"value": "Missing Authorization (CWE-862) in the Elasticsearch custom inference service can lead to information disclosure via Privilege Abuse (CAPEC-122). A user holding only inference execution privileges could cause outbound inference traffic to be directed to a destination of their choosing and could cause administrator-provisioned credentials to be exposed."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T19:20:34.174Z",
"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"shortName": "elastic"
},
"references": [
{
"url": "https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-9-5-1-security-update-esa-2026-143/390094"
}
],
"source": {
"discovery": "Elastic"
},
"title": "Missing Authorization in Elasticsearch Leading to Information Disclosure",
"x_generator": {
"engine": "Elastic CVE Publisher 1.0.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"assignerShortName": "elastic",
"cveId": "CVE-2026-78607",
"datePublished": "2026-09-01T19:20:34.174Z",
"dateReserved": "2026-08-24T21:13:52.890Z",
"dateUpdated": "2026-09-01T19:41:19.721Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…