CVE-2026-76827
Full vulnerability record from the local CVENow database.
Description
A flaw was found in search-indexer. This vulnerability allows a registered and authenticated managed cluster to tamper with or delete another cluster's indexed search data. This is possible because the delta-sync write paths in search-indexer do not properly restrict UPDATE/DELETE operations to data owned by the calling cluster. An attacker could exploit this by crafting specific user identifiers (UIDs) with a different cluster's prefix.
Severity
MEDIUM
CVSS score
6.8
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-08-19 21:17:39.227000
Last modified
2026-10-26 10:10:00.140000
View original CVE JSON
{
"id": "CVE-2026-76827",
"sourceIdentifier": "[email protected]",
"published": "2026-08-19T21:17:39.227",
"lastModified": "2026-10-26T10:10:00.140",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in search-indexer. This vulnerability allows a registered and authenticated managed cluster to tamper with or delete another cluster's indexed search data. This is possible because the delta-sync write paths in search-indexer do not properly restrict UPDATE/DELETE operations to data owned by the calling cluster. An attacker could exploit this by crafting specific user identifiers (UIDs) with a different cluster's prefix."
},
{
"lang": "es",
"value": "Se encontró una falla en search-indexer. Esta vulnerabilidad permite a un clúster gestionado registrado y autenticado manipular o eliminar los datos de búsqueda indexados de otro clúster. Esto es posible porque las rutas de escritura de sincronización delta en search-indexer no restringen adecuadamente las operaciones de ACTUALIZACIÓN/ELIMINACIÓN a los datos propiedad del clúster que realiza la llamada. Un atacante podría explotar esto al crear identificadores de usuario específicos (UIDs) con el prefijo de un clúster diferente."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.11",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "rhacm2/acm-search-indexer-rhel9",
"cpes": [
"cpe:/a:redhat:acm:2.11::el9"
],
"versions": [
{
"version": "1787688957",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.13",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "rhacm2/acm-search-indexer-rhel9",
"cpes": [
"cpe:/a:redhat:acm:2.13::el9"
],
"versions": [
{
"version": "1787262474",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.14",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "rhacm2/acm-search-indexer-rhel9",
"cpes": [
"cpe:/a:redhat:acm:2.14::el9"
],
"versions": [
{
"version": "1787250074",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.15",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "rhacm2/acm-search-indexer-rhel9",
"cpes": [
"cpe:/a:redhat:acm:2.15::el9"
],
"versions": [
{
"version": "1787249293",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.16",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "rhacm2/acm-search-indexer-rhel9",
"cpes": [
"cpe:/a:redhat:acm:2.16::el9"
],
"versions": [
{
"version": "1787248491",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.17",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "rhacm2/acm-search-indexer-rhel9",
"cpes": [
"cpe:/a:redhat:acm:2.17::el9"
],
"versions": [
{
"version": "1787247085",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "HIGH",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 2.3,
"impactScore": 4.0
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-21T16:49:03.822112Z",
"id": "CVE-2026-76827",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-693"
}
]
}
],
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:60386",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60387",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60388",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60389",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60390",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60391",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-76827",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519896",
"source": "[email protected]"
}
]
}