{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-11861 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-11861 is a critical authentication bypass vulnerability in Redhat Enterprise Linux, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-11861 and fix it if it is affected.\n\nWhat it is: CVE-2026-11861 is a critical authentication bypass vulnerability in Redhat Enterprise Linux, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-11861 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. 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-2026-11861/ (Markdown: https://insights.sbomify.com/CVE-2026-11861/index.md)","id":"CVE-2026-11861","markdown":"https://insights.sbomify.com/CVE-2026-11861/index.md","name":"CVE-2026-11861","record":{"aliases":["DEBIAN-CVE-2026-11861","GHSA-g67c-jg9c-rqh2","UBUNTU-CVE-2026-11861"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"FreeIPA identity management","requires_auth":"low_privilege","summary":"Authenticated Active Directory users can bypass authentication and escalate privileges in FreeIPA by impersonating client names due to missing PAC verification.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"freeipa","vendor":"freeipa"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":9.6,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-266","name":"Incorrect Privilege Assignment"}],"description":"A flaw was found in FreeIPA. When a trust relationship is configured between FreeIPA and Active Directory, Active Directory users can bypass authentication for FreeIPA services, including the portal, SMB server, and LDAP directory. This is possible by impersonating a client name in the Ticket Granting Service (TGS) due to FreeIPA services not verifying Privilege Attribute Certificate (PAC) certificates. This vulnerability could allow an authenticated Active Directory user to escalate their privileges within the FreeIPA domain.","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":"Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships","id":"CVE-2026-11861","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux"],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":11,"next":{"headline":"Multiple security vulnerabilities are addressed with IBM Cloud Pak for Business Automation iFixes for August 2026.","id":"CVE-2026-11864"},"packages":[],"prev":{"headline":"Insecure Deserialisation via Plaintext HTTP leading to Remote Code Execution in Quick.CMS","id":"CVE-2026-11860"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.6 Extended Update Support"],"published":"2026-08-20","related":[{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2015-5284","kev_date_added":null,"published":"2017-09-21"},{"cvss_score":8.8,"headline":"Freeipa: delegation rules allow a proxy service to impersonate any user to access another target service","id":"CVE-2024-2698","kev_date_added":null,"published":"2024-06-12"},{"cvss_score":8.8,"headline":"Information disclosure in ipa","id":"CVE-2012-5631","kev_date_added":null,"published":"2019-11-25"},{"cvss_score":8.8,"headline":"Security feature bypass in n/a","id":"CVE-2017-11191","kev_date_added":null,"published":"2017-09-27"},{"cvss_score":8.7,"headline":"Privilege escalation in Red Hat Enterprise Linux 10","id":"CVE-2026-13097","kev_date_added":null,"published":"2026-08-20"},{"cvss_score":8.2,"headline":"Missing authorization in Red Hat Enterprise Linux 10","id":"CVE-2026-19550","kev_date_added":null,"published":"2026-08-11"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-26","vendors":["Red Hat"]},"summary":"Authenticated Active Directory users can bypass authentication and escalate privileges in FreeIPA by impersonating client names due to missing PAC verification.","url":"https://insights.sbomify.com/CVE-2026-11861/"}