{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-109575 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-109575 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-109575 is a critical authentication bypass vulnerability in HAProxy Data Plane API CE, published on 12 Oct 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-2026-109575 and fix it if it is affected.\n\nWhat it is: CVE-2026-109575 is a critical authentication bypass vulnerability in HAProxy Data Plane API CE, published on 12 Oct 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-2026-109575 in the wild and no public exploit code.\n\nAffected product: HAProxy Data Plane API CE. 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-2026-109575/ (Markdown: https://insights.sbomify.com/CVE-2026-109575/index.md)","id":"CVE-2026-109575","markdown":"https://insights.sbomify.com/CVE-2026-109575/index.md","name":"CVE-2026-109575","record":{"aliases":["GHSA-7jqw-rhp8-c8vf"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_read","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"HAProxy Data Plane API","requires_auth":"none","summary":"Unauthenticated attackers can bypass authentication on HTTP or UNIX listeners to gain full administrative access and modify HAProxy configurations when TLS CA is configured.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"In HAProxy Data Plane API 2.2.0 through 3.4.3 (and corresponding Enterprise Edition releases), Server.ConfigureAPI() has process-global authentication logic that improperly drops security controls across multiple transport types. When a TLS Certificate Authority (tls_ca) is configured and a numeric TLS port (tls_port) is specified, the application globally disables Basic authentication on its shared internal request handler. Because this handler is shared concurrently among HTTP, HTTPS, and UNIX domain socket listeners, and mutual TLS (mTLS) client certificate verification (tls.RequireAndVerifyClientCert) is enforced exclusively on the HTTPS server path, all other simultaneously active non-mTLS listeners fail open. Consequently, an unauthenticated attacker capable of reaching an affected HTTP or UNIX management endpoint can completely bypass credentials to gain full API administrative access. This allows unauthorized remote or local actors to read sensitive, cleartext HAProxy configuration data or replace the managed configuration entirely via the raw configuration endpoint. This has been fixed in versions 3.4.4, 3.3.9, 3.2.17, 3.0.25, 2.9.29, and their respective EE backports by migrating to a per-request TLS connection-state validation model.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Auth bypass in Data Plane API CE","id":"CVE-2026-109575","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"HMS Networks PEAK-System PCAN Windows drivers Out-of-bounds Write","id":"CVE-2026-109576"},"packages":[],"prev":{"headline":"Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback","id":"CVE-2026-109574"},"products":["Data Plane API CE","Data Plane API EE"],"published":"2026-10-12","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":"total"},"state":"PUBLISHED","updated":"2026-10-13","vendors":["HAProxy"]},"summary":"Unauthenticated attackers can bypass authentication on HTTP or UNIX listeners to gain full administrative access and modify HAProxy configurations when TLS CA is configured.","url":"https://insights.sbomify.com/CVE-2026-109575/"}