{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-95503 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-95503 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-95503 is a medium-severity authentication bypass vulnerability in Red Hat Build of Keycloak, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-95503 and fix it if it is affected.\n\nWhat it is: CVE-2026-95503 is a medium-severity authentication bypass vulnerability in Red Hat Build of Keycloak, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-95503 in the wild and no public exploit code.\n\nAffected product: Red Hat Build of Keycloak. 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-2026-95503/ (Markdown: https://insights.sbomify.com/CVE-2026-95503/index.md)","id":"CVE-2026-95503","markdown":"https://insights.sbomify.com/CVE-2026-95503/index.md","name":"CVE-2026-95503","record":{"aliases":["GHSA-35j3-ccrv-pgvj"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["account_takeover","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Identity and access management","requires_auth":"none","summary":"Attackers can spoof the KDC to bypass authentication in Keycloak when Kerberos password auth is enabled without SPNEGO, gaining unauthorized access.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"A flaw was found in the Kerberos federation provider of Keycloak, an open-source identity and access management solution. When Kerberos password authentication is used without SPNEGO, the system fails to verify the identity of the Key Distribution Center (KDC) by requesting a server ticket. This allows an attacker on the same network to spoof the KDC and bypass the authentication process, potentially gaining unauthorized access to user accounts.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Keycloak-services: keycloak-services: potential kdc spoofing bypass when kerberos password authentication is enabled","id":"CVE-2026-95503","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Libslirp: libslirp: heap buffer overflow in dhcpv6/tftp response builders on small interface mtu","id":"CVE-2026-95508"},"packages":[],"prev":{"headline":"Git Sync memory exhaustion via a malicious Git server","id":"CVE-2026-95502"},"products":["Red Hat Build of Keycloak","Red Hat Single Sign-On 7"],"published":"2026-09-22","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-22","vendors":["Red Hat"]},"summary":"Attackers can spoof the KDC to bypass authentication in Keycloak when Kerberos password auth is enabled without SPNEGO, gaining unauthorized access.","url":"https://insights.sbomify.com/CVE-2026-95503/"}