{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-12383 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-12383 is a high-severity authentication bypass vulnerability in Red Hat Ansible Automation Platform 2.5 for RHEL 8, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-12383 and fix it if it is affected.\n\nWhat it is: CVE-2026-12383 is a high-severity authentication bypass vulnerability in Red Hat Ansible Automation Platform 2.5 for RHEL 8, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-12383 in the wild and no public exploit code.\n\nAffected product: Red Hat Ansible Automation Platform 2.5 for RHEL 8. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-12383/ (Markdown: https://insights.sbomify.com/CVE-2026-12383/index.md)","id":"CVE-2026-12383","markdown":"https://insights.sbomify.com/CVE-2026-12383/index.md","name":"CVE-2026-12383","record":{"aliases":["GHSA-c4xf-fv75-hwxm"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Ansible Automation Platform","requires_auth":"none","summary":"Attackers can bypass mTLS authentication by spoofing the Subject header to inject arbitrary events into Ansible EDA streams, triggering unauthorized automation actions.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Eda-server: externaleventstreamviewset trusts subject header without validation and leaks expected dn","id":"CVE-2026-12383","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Broken Access Control in TECHIN2B Application","id":"CVE-2026-12384"},"packages":[],"prev":{"headline":"Aap-gateway: missing requestheaderstoremove allows mtls bypass via subject header spoofing","id":"CVE-2026-12382"},"products":["Red Hat Ansible Automation Platform 2.5 for RHEL 8","Red Hat Ansible Automation Platform 2.5 for RHEL 9","Red Hat Ansible Automation Platform 2.6 for RHEL 9","Red Hat Ansible Automation Platform 2.7"],"published":"2026-07-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-04","vendors":["Red Hat"]},"summary":"Attackers can bypass mTLS authentication by spoofing the Subject header to inject arbitrary events into Ansible EDA streams, triggering unauthorized automation actions.","url":"https://insights.sbomify.com/CVE-2026-12383/"}