# CVE-2026-11807: Eda-server: websocket missing authorization allows credential theft via activation_id spoofing

Status: published. Published: 2026-06-23. Updated: 2026-11-04.

A missing authorization vulnerability was found in the Event-Driven Ansible (EDA) websocket API. The /api/eda/ws/ansible-rulebook endpoint does not verify user permissions when processing Worker messages. Any authenticated user can send a forged message with an arbitrary activation_id to receive plaintext credentials associated with that activation, including OAuth tokens, vault passwords, and SSH keys.

## Remediation

- workaround: The following practices would help for reducing or avoiding the exposure to this flaw:

1) Restrict network access to the EDA websocket endpoint.
2) Review and limit user accounts with any level of Ansible Automation Platform authentication until the fix is applied. (source: CNA: redhat)
- fix: RHSA-2026:28376: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9

RHSA-2026:28377: Red Hat Ansible Automation Platform 2.6 for RHEL 9

RHSA-2026:28497: Red Hat Ansible Automation Platform 2.5

RHSA-2026:28492: Red Hat Ansible Automation Platform 2.6

RHSA-2026:28440: Red Hat Ansible Automation Platform 2.7 (source: ADP: redhat-SADP)
- workaround: The following practices would help for reducing or avoiding the exposure to this flaw:

1) Restrict network access to the EDA websocket endpoint.
2) Review and limit user accounts with any level of Ansible Automation Platform authentication until the fix is applied. (source: ADP: redhat-SADP)

## Affected products and versions

- Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 8 (automation-eda-controller): ≥ 0:1.1.19-1.el8ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 9 (automation-eda-controller): ≥ 0:1.1.19-1.el9ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.6 for RHEL 9 (automation-eda-controller): ≥ 0:1.2.9-2.el9ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.5 (ansible-automation-platform-25/eda-controller-rhel8): ≥ 1781741251; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.6 (ansible-automation-platform-26/eda-controller-rhel9): ≥ 1781732675; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.7 (ansible-automation-platform-27/eda-controller-rhel9): ≥ 1781730525; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2 (ansible-automation-platform-24/eda-controller-rhel8): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 8 (automation-eda-controller): ≥ 0:1.1.19-1.el8ap; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 9 (automation-eda-controller): ≥ 0:1.1.19-1.el9ap; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Ansible Automation Platform 2.6 for RHEL 9 (automation-eda-controller): ≥ 0:1.2.9-2.el9ap; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Ansible Automation Platform 2.5 (ansible-automation-platform-25/eda-controller-rhel8): ≥ 1781741251; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Ansible Automation Platform 2.6 (ansible-automation-platform-26/eda-controller-rhel9): ≥ 1781732675; < * (unaffected, rpm). Source: ADP: redhat-SADP
- Red Hat / Red Hat Ansible Automation Platform 2.7 (ansible-automation-platform-27/eda-controller-rhel9): ≥ 1781730525; < * (unaffected, rpm). Source: ADP: redhat-SADP

## Severity and prioritization

- CVSS 3.1: 9.6 (critical); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N; source: CNA: redhat

- CVSS 3.1: 9.6 (critical); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N; source: ADP: redhat-SADP

- CVSS 3.1: 9.6 (critical); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N; source: NVD: secalert@redhat.com

- CVSS 3.1: 9.6 (critical); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N; source: NVD: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

- CISA KEV: No listing in collected sources

- EPSS: 0.53% as of 2026-11-04; percentile 45.01%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:28376 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28377 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28440 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28492 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28497 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-11807 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2487036 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-11807 (ADP: redhat-SADP; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2487036 (ADP: redhat-SADP; issue-tracking, x_refsource_REDHAT)

- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-11807.json (ADP: redhat-SADP; x_sadp-csaf-vex)

- https://access.redhat.com/errata/RHSA-2026:28376 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28377 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28497 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28492 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28440 (ADP: redhat-SADP; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:28376 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:28377 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:28440 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:28492 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:28497 (secalert@redhat.com)

- https://access.redhat.com/security/cve/CVE-2026-11807 (secalert@redhat.com)

- https://bugzilla.redhat.com/show_bug.cgi?id=2487036 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:28376 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://access.redhat.com/errata/RHSA-2026:28377 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://access.redhat.com/errata/RHSA-2026:28440 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://access.redhat.com/errata/RHSA-2026:28492 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://access.redhat.com/errata/RHSA-2026:28497 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://access.redhat.com/security/cve/CVE-2026-11807 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://bugzilla.redhat.com/show_bug.cgi?id=2487036 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-11807.json (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-11807; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11807; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-11807; retrieved 2026-11-04; source updated Not reported

Revision: cb5a73c36f272403f380c781b077dda8592c5dca8e1694d8a3e8cd11f12b256d

Canonical: https://y2.dev/cve/CVE-2026-11807

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.