{"answers":{"affected":"2 open source packages ship an affected version, including org.keycloak:keycloak-quarkus-server.","exploited":"There is no known exploitation of CVE-2026-0976 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-0976 is a low-severity vulnerability in Red Hat Build of Keycloak, published on 15 Jan 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-2026-0976 and fix it if it is affected.\n\nWhat it is: CVE-2026-0976 is a low-severity vulnerability in Red Hat Build of Keycloak, published on 15 Jan 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-2026-0976 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.keycloak:keycloak-quarkus-server (Maven): affected all versions up to 26.2.5; no fix listed\n- org.keycloak:keycloak-quarkus-server (Maven): affected all versions up to 26.2.5; no fix listed\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-2026-0976/ (Markdown: https://insights.sbomify.com/CVE-2026-0976/index.md)","id":"CVE-2026-0976","markdown":"https://insights.sbomify.com/CVE-2026-0976/index.md","name":"CVE-2026-0976","record":{"aliases":["GHSA-v897-pv23-r8cw","MINI-37w7-7hpc-rh2x"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Keycloak identity server","requires_auth":"none","summary":"Attackers can bypass reverse proxy path filtering by using matrix parameters, exposing sensitive administrative endpoints in Keycloak deployments.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.","ecosystems":["Maven"],"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":"Org.keycloak/keycloak-quarkus-server: keycloak: proxy bypass due to improper handling of matrix parameters in url paths","id":"CVE-2026-0976","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"IBM CICS Transaction Gateway for Multiplatforms Information Disclosure","id":"CVE-2026-0977"},"packages":[{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["26.2.5"],"package":"org.keycloak:keycloak-quarkus-server","purl":null,"source":"GHSA-v897-pv23-r8cw"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["26.2.5"],"package":"org.keycloak:keycloak-quarkus-server","purl":"pkg:maven/org.keycloak/keycloak-quarkus-server","source":"GHSA-v897-pv23-r8cw"}],"prev":{"headline":"DIAView - Command Injection Vulnerability","id":"CVE-2026-0975"},"products":["Red Hat Build of Keycloak","Red Hat JBoss Enterprise Application Platform 8","Red Hat JBoss Enterprise Application Platform Expansion Pack","Red Hat build of Keycloak 26.4.9"],"published":"2026-01-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-10-22","vendors":["Red Hat"]},"summary":"Attackers can bypass reverse proxy path filtering by using matrix parameters, exposing sensitive administrative endpoints in Keycloak deployments.","url":"https://insights.sbomify.com/CVE-2026-0976/"}