CVE-2026-84716 (GCVE-0-2026-84716)
Vulnerability from cvelistv5
Published
2026-09-23 19:40
Modified
2026-10-16 11:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-266 - Incorrect Privilege Assignment
Summary
A flaw was found in the automation-controller instance
install-bundle endpoint. When a System Administrator downloads
an execution/hop node's install bundle, the controller signs an
X.509 certificate with the receptor mesh certificate authority
in which the Common Name, DNS subject-alternative-name, and
receptor node-id are taken verbatim from the caller-chosen
instance hostname, with a hard-coded ten-year validity, a random
serial, and no issuance log or revocation list. Because the
hostname charset validator is case-insensitive while the
uniqueness validator is case-sensitive, an administrator can
register a case variant of an existing control node's hostname
and obtain a mesh-CA-signed certificate that TLS peers, which
match hostnames case-insensitively, accept as that control node.
In managed/hosted deployments — where the customer holds
controller superuser but the platform operator runs the mesh —
this yields a long-lived, non-revocable mesh peer credential and,
with an on-path position, TLS impersonation or interception of
control/hybrid mesh nodes. It does not grant direct remote code
execution, because receptor work submission is gated by a
separate signing key not included in the bundle.
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected: 0:4.6.33-1.el8ap < * cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
||||||||||||||||||||||
|
||||||||||||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-84716",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-24T13:59:02.127273Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T15:05:23.389Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.5::el8",
"cpe:/a:redhat:ansible_automation_platform:2.5::el9",
"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8",
"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9",
"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8",
"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9"
],
"defaultStatus": "affected",
"packageName": "automation-controller",
"product": "Red Hat Ansible Automation Platform 2.5 for RHEL 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.6.33-1.el8ap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.5::el8",
"cpe:/a:redhat:ansible_automation_platform:2.5::el9",
"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8",
"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9",
"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8",
"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9"
],
"defaultStatus": "affected",
"packageName": "automation-controller",
"product": "Red Hat Ansible Automation Platform 2.5 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.6.33-1.el9ap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.6::el10",
"cpe:/a:redhat:ansible_automation_platform:2.6::el9",
"cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10",
"cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9",
"cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9"
],
"defaultStatus": "affected",
"packageName": "automation-controller",
"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.7.17-1.el9ap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.6::el9"
],
"defaultStatus": "affected",
"packageName": "ansible-automation-platform-26/controller-rhel9",
"product": "Red Hat Ansible Automation Platform 2.6",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1789673739",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.7::el9"
],
"defaultStatus": "affected",
"packageName": "ansible-automation-platform-27/controller-rhel9",
"product": "Red Hat Ansible Automation Platform 2.7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1789580684",
"versionType": "rpm"
}
]
}
],
"datePublic": "2026-09-23T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the automation-controller instance\n install-bundle endpoint. When a System Administrator downloads\n an execution/hop node\u0027s install bundle, the controller signs an\n X.509 certificate with the receptor mesh certificate authority\n in which the Common Name, DNS subject-alternative-name, and\n receptor node-id are taken verbatim from the caller-chosen\n instance hostname, with a hard-coded ten-year validity, a random\n serial, and no issuance log or revocation list. Because the\n hostname charset validator is case-insensitive while the\n uniqueness validator is case-sensitive, an administrator can\n register a case variant of an existing control node\u0027s hostname\n and obtain a mesh-CA-signed certificate that TLS peers, which\n match hostnames case-insensitively, accept as that control node.\n In managed/hosted deployments \u2014 where the customer holds\n controller superuser but the platform operator runs the mesh \u2014\n this yields a long-lived, non-revocable mesh peer credential and,\n with an on-path position, TLS impersonation or interception of\n control/hybrid mesh nodes. It does not grant direct remote code\n execution, because receptor work submission is gated by a\n separate signing key not included in the bundle."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Moderate"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-266",
"description": "Incorrect Privilege Assignment",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-16T11:55:20.071Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"name": "RHSA-2026:71113",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:71113"
},
{
"name": "RHSA-2026:71114",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:71114"
},
{
"name": "RHSA-2026:71177",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:71177"
},
{
"name": "RHSA-2026:71179",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:71179"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-84716"
},
{
"name": "RHBZ#2527199",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527199"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-02T01:03:49.507Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-09-23T00:00:00.000Z",
"value": "Made public."
}
],
"title": "Automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-ca certificates for caller-chosen (and case-variant impersonating) hostnames",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-266: Incorrect Privilege Assignment"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-84716",
"datePublished": "2026-09-23T19:40:28.390Z",
"dateReserved": "2026-09-02T01:03:53.834Z",
"dateUpdated": "2026-10-16T11:55:20.071Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-84716\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-24T13:59:02.127273Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-24T13:59:02.992Z\"}}], \"cna\": {\"title\": \"Automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-ca certificates for caller-chosen (and case-variant impersonating) hostnames\", \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Moderate\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 6.6, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"cpes\": [\"cpe:/a:redhat:ansible_automation_platform:2.5::el8\", \"cpe:/a:redhat:ansible_automation_platform:2.5::el9\", \"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8\", \"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9\", \"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8\", \"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Ansible Automation Platform 2.5 for RHEL 8\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:4.6.33-1.el8ap\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"automation-controller\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:ansible_automation_platform:2.5::el8\", \"cpe:/a:redhat:ansible_automation_platform:2.5::el9\", \"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8\", \"cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9\", \"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8\", \"cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Ansible Automation Platform 2.5 for RHEL 9\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:4.6.33-1.el9ap\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"automation-controller\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:ansible_automation_platform:2.6::el10\", \"cpe:/a:redhat:ansible_automation_platform:2.6::el9\", \"cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10\", \"cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9\", \"cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Ansible Automation Platform 2.6 for RHEL 9\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:4.7.17-1.el9ap\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"automation-controller\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:ansible_automation_platform:2.6::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Ansible Automation Platform 2.6\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"1789673739\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"ansible-automation-platform-26/controller-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:ansible_automation_platform:2.7::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Ansible Automation Platform 2.7\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"1789580684\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"ansible-automation-platform-27/controller-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-09-02T01:03:49.507Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-09-23T00:00:00.000Z\", \"value\": \"Made public.\"}], \"datePublic\": \"2026-09-23T00:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2026:71113\", \"name\": \"RHSA-2026:71113\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:71114\", \"name\": \"RHSA-2026:71114\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:71177\", \"name\": \"RHSA-2026:71177\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:71179\", \"name\": \"RHSA-2026:71179\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-84716\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2527199\", \"name\": \"RHBZ#2527199\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A flaw was found in the automation-controller instance\\n install-bundle endpoint. When a System Administrator downloads\\n an execution/hop node\u0027s install bundle, the controller signs an\\n X.509 certificate with the receptor mesh certificate authority\\n in which the Common Name, DNS subject-alternative-name, and\\n receptor node-id are taken verbatim from the caller-chosen\\n instance hostname, with a hard-coded ten-year validity, a random\\n serial, and no issuance log or revocation list. Because the\\n hostname charset validator is case-insensitive while the\\n uniqueness validator is case-sensitive, an administrator can\\n register a case variant of an existing control node\u0027s hostname\\n and obtain a mesh-CA-signed certificate that TLS peers, which\\n match hostnames case-insensitively, accept as that control node.\\n In managed/hosted deployments \\u2014 where the customer holds\\n controller superuser but the platform operator runs the mesh \\u2014\\n this yields a long-lived, non-revocable mesh peer credential and,\\n with an on-path position, TLS impersonation or interception of\\n control/hybrid mesh nodes. It does not grant direct remote code\\n execution, because receptor work submission is gated by a\\n separate signing key not included in the bundle.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-266\", \"description\": \"Incorrect Privilege Assignment\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-10-16T11:55:20.071Z\"}, \"x_redhatCweChain\": \"CWE-266: Incorrect Privilege Assignment\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-84716\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-16T11:55:20.071Z\", \"dateReserved\": \"2026-09-02T01:03:53.834Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-09-23T19:40:28.390Z\", \"assignerShortName\": \"redhat\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…