{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2026-11791 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-11791 is a medium-severity use after free vulnerability in Redhat Enterprise Linux, published on 18 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-11791 and fix it if it is affected.\n\nWhat it is: CVE-2026-11791 is a medium-severity use after free vulnerability in Redhat Enterprise Linux, published on 18 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-11791 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-2026-11791/ (Markdown: https://insights.sbomify.com/CVE-2026-11791/index.md)","id":"CVE-2026-11791","markdown":"https://insights.sbomify.com/CVE-2026-11791/index.md","name":"CVE-2026-11791","record":{"aliases":["AZL-90206","DEBIAN-CVE-2026-11791","GHSA-gxp7-cx54-gr2m","UBUNTU-CVE-2026-11791"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"LDAP directory server","requires_auth":"high_privilege","summary":"An attacker or administrator triggering schema reload during concurrent LDAP traffic can cause a use-after-free, leading to server crash and denial of service.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"389_directory_server","vendor":"redhat"},{"product":"directory_server","vendor":"redhat"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).","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":"389-ds-base: 389-ds-base: use-after-free in schema reload via attr_syntax_swap_ht()","id":"CVE-2026-11791","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux"],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"389-ds-base: 389-ds-base: heap buffer overflow in audit log password masking (create_masked_entry_string)","id":"CVE-2026-11792"},"packages":[],"prev":{"headline":"389-ds-base: 389-ds-base: pbkdf2 password storage plugin unbounded iteration count denial of service","id":"CVE-2026-11790"},"products":["Red Hat Directory Server 11","Red Hat Directory Server 12","Red Hat Directory Server 13","Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9"],"published":"2026-06-18","related":[{"cvss_score":7.5,"headline":"389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check","id":"CVE-2026-11770","kev_date_added":null,"published":"2026-07-31"},{"cvss_score":7.5,"headline":"Memory corruption in Red Hat Directory Server 11.5 E4S for RHEL 8","id":"CVE-2026-15722","kev_date_added":null,"published":"2026-07-31"},{"cvss_score":7.5,"headline":"Denial of service in Red Hat Directory Server 11.5 E4S for RHEL 8","id":"CVE-2026-9064","kev_date_added":null,"published":"2026-05-20"},{"cvss_score":7.5,"headline":"Null dereference in Red Hat Directory Server","id":"CVE-2010-2222","kev_date_added":null,"published":"2019-11-05"},{"cvss_score":6.5,"headline":"389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions","id":"CVE-2026-11611","kev_date_added":null,"published":"2026-06-08"},{"cvss_score":6.5,"headline":"389-ds-base: unauthenticated user can trigger a dos by sending a specific extended search request","id":"CVE-2024-6237","kev_date_added":null,"published":"2024-07-09"},{"cvss_score":6.5,"headline":"Null dereference in 389-ds-base","id":"CVE-2021-3514","kev_date_added":null,"published":"2021-05-28"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-06-30","vendors":["Red Hat"]},"summary":"An attacker or administrator triggering schema reload during concurrent LDAP traffic can cause a use-after-free, leading to server crash and denial of service.","url":"https://insights.sbomify.com/CVE-2026-11791/"}