CVE-2026-12383 (GCVE-0-2026-12383)
Vulnerability from cvelistv5
Published
2026-07-27 19:12
Modified
2026-08-04 20:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Summary
A flaw was found in the Event-Driven Ansible (EDA) server. The ExternalEventStreamViewSet uses permissive access controls (permission_classes=[AllowAny], authentication_classes=[]) and relies solely on the Subject HTTP header value for mTLS authentication without verifying that the header originated from a trusted proxy. Additionally, the expected certificate Distinguished Name is leaked in the 403 error response body. An attacker who can reach the EDA API endpoint with a spoofed Subject header can inject arbitrary events into mTLS-protected event streams, triggering downstream automation actions.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected: 0:1.1.21-1.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-2026-12383",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-27T19:31:53.427622Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-27T19:32:02.421Z",
"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-eda-controller",
"product": "Red Hat Ansible Automation Platform 2.5 for RHEL 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:1.1.21-1.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-eda-controller",
"product": "Red Hat Ansible Automation Platform 2.5 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:1.1.21-1.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-eda-controller",
"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:1.2.11-1.el9ap",
"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/eda-controller-rhel9",
"product": "Red Hat Ansible Automation Platform 2.7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1785374869",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "This issue was discovered by Chris Meyers (Red Hat)."
}
],
"datePublic": "2026-07-27T19:04:53.794Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the Event-Driven Ansible (EDA) server. The ExternalEventStreamViewSet uses permissive access controls (permission_classes=[AllowAny], authentication_classes=[]) and relies solely on the Subject HTTP header value for mTLS authentication without verifying that the header originated from a trusted proxy. Additionally, the expected certificate Distinguished Name is leaked in the 403 error response body. An attacker who can reach the EDA API endpoint with a spoofed Subject header can inject arbitrary events into mTLS-protected event streams, triggering downstream automation actions."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-345",
"description": "Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T20:48:52.041Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"name": "RHSA-2026:50319",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:50319"
},
{
"name": "RHSA-2026:50336",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:50336"
},
{
"name": "RHSA-2026:50340",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:50340"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-12383"
},
{
"name": "RHBZ#2489127",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2489127"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-16T10:09:09.069Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-07-27T19:04:53.794Z",
"value": "Made public."
}
],
"title": "Eda-server: externaleventstreamviewset trusts subject header without validation and leaks expected dn",
"workarounds": [
{
"lang": "en",
"value": "The following practices would help for avoiding exposure and mitigate this flaw:\n\n- Ensure the EDA server is not directly accessible from untrusted networks; all traffic should route through the AAP Gateway which should perform mTLS validation.\n- If possible, configure network-level access controls to restrict which source IPs can reach the EDA backend API.\n- Monitor EDA event streams for unexpected events_received counter changes.\n- Review and rotate mTLS client certificates if unauthorized access is suspected, as the expected DN may have been leaked via the 403 error response."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-345: Insufficient Verification of Data Authenticity"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-12383",
"datePublished": "2026-07-27T19:12:29.271Z",
"dateReserved": "2026-06-16T10:07:26.251Z",
"dateUpdated": "2026-08-04T20:48:52.041Z",
"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-2026-12383\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-27T19:31:53.427622Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-27T19:31:55.988Z\"}}], \"cna\": {\"title\": \"Eda-server: externaleventstreamviewset trusts subject header without validation and leaks expected dn\", \"credits\": [{\"lang\": \"en\", \"value\": \"This issue was discovered by Chris Meyers (Red Hat).\"}], \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Important\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"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\": \"0:1.1.21-1.el8ap\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"automation-eda-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\": \"0:1.1.21-1.el9ap\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"automation-eda-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\": \"0:1.2.11-1.el9ap\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"automation-eda-controller\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"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\": \"1785374869\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"ansible-automation-platform-27/eda-controller-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-06-16T10:09:09.069Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-07-27T19:04:53.794Z\", \"value\": \"Made public.\"}], \"datePublic\": \"2026-07-27T19:04:53.794Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2026:50319\", \"name\": \"RHSA-2026:50319\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:50336\", \"name\": \"RHSA-2026:50336\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:50340\", \"name\": \"RHSA-2026:50340\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-12383\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2489127\", \"name\": \"RHBZ#2489127\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"The following practices would help for avoiding exposure and mitigate this flaw:\\n\\n- Ensure the EDA server is not directly accessible from untrusted networks; all traffic should route through the AAP Gateway which should perform mTLS validation.\\n- If possible, configure network-level access controls to restrict which source IPs can reach the EDA backend API.\\n- Monitor EDA event streams for unexpected events_received counter changes.\\n- Review and rotate mTLS client certificates if unauthorized access is suspected, as the expected DN may have been leaked via the 403 error response.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A flaw was found in the Event-Driven Ansible (EDA) server. The ExternalEventStreamViewSet uses permissive access controls (permission_classes=[AllowAny], authentication_classes=[]) and relies solely on the Subject HTTP header value for mTLS authentication without verifying that the header originated from a trusted proxy. Additionally, the expected certificate Distinguished Name is leaked in the 403 error response body. An attacker who can reach the EDA API endpoint with a spoofed Subject header can inject arbitrary events into mTLS-protected event streams, triggering downstream automation actions.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-345\", \"description\": \"Insufficient Verification of Data Authenticity\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-08-04T20:48:52.041Z\"}, \"x_redhatCweChain\": \"CWE-345: Insufficient Verification of Data Authenticity\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-12383\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-04T20:48:52.041Z\", \"dateReserved\": \"2026-06-16T10:07:26.251Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-07-27T19:12:29.271Z\", \"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…