{"answers":{"affected":"4 open source packages ship an affected version, including org.keycloak:keycloak-services. It affects 2 products.","exploited":"There is no known exploitation of CVE-2023-6787 in the wild and no public exploit code.","fix":"Upgrade org.keycloak:keycloak-services to a fixed version for your release line: 22.0.10 or 24.0.3.","what":"CVE-2023-6787 is a medium-severity authentication bypass vulnerability in Redhat Build of Keycloak, published on 25 Apr 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-6787 and fix it if it is affected.\n\nWhat it is: CVE-2023-6787 is a medium-severity authentication bypass vulnerability in Redhat Build of Keycloak, published on 25 Apr 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-6787 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.keycloak:keycloak-services (Maven): affected all versions; fixed in 22.0.10\n- org.keycloak:keycloak-services (Maven): affected all versions; fixed in 22.0.10\n- org.keycloak:keycloak-services (Maven): affected from 23.0.0; fixed in 24.0.3\n- org.keycloak:keycloak-services (Maven): affected from 23.0.0; fixed in 24.0.3\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-2023-6787/ (Markdown: https://insights.sbomify.com/CVE-2023-6787/index.md)","id":"CVE-2023-6787","markdown":"https://insights.sbomify.com/CVE-2023-6787/index.md","name":"CVE-2023-6787","record":{"aliases":["GHSA-c9h6-v78w-52wj"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Keycloak identity provider","requires_auth":"none","summary":"Attackers can hijack active Keycloak sessions and take over accounts by exploiting a flaw in the re-authentication mechanism when users cancel login prompts.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_keycloak","vendor":"redhat"},{"product":"keycloak","vendor":"redhat"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter \"prompt=login,\" prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting \"Restart login,\" an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.","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":"Keycloak: session hijacking via re-authentication","id":"CVE-2023-6787","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:build_of_keycloak","products":["redhat:build_of_keycloak","redhat:keycloak"],"type":"auth_bypass","year":"2023"},"n_packages":4,"n_references":5,"next":{"headline":"Metform Elementor Contact Form Builder \u003c= 3.8.1 - Cross-Site Request Forgery","id":"CVE-2023-6788"},"packages":[{"ecosystem":"Maven","fixed":["22.0.10"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":null,"source":"GHSA-c9h6-v78w-52wj"},{"ecosystem":"Maven","fixed":["22.0.10"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","source":"GHSA-c9h6-v78w-52wj"},{"ecosystem":"Maven","fixed":["24.0.3"],"introduced":["23.0.0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":null,"source":"GHSA-c9h6-v78w-52wj"},{"ecosystem":"Maven","fixed":["24.0.3"],"introduced":["23.0.0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","source":"GHSA-c9h6-v78w-52wj"}],"prev":{"headline":"Payment Gateway for Telcell \u003c= 2.0.1 - Unauthenticated Open Redirect","id":"CVE-2023-6786"},"products":["Red Hat Single Sign-On 7","Red Hat build of Keycloak 22","Red Hat build of Keycloak 22.0.10"],"published":"2024-04-25","related":[{"cvss_score":8.8,"headline":"Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation","id":"CVE-2026-15572","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":8.8,"headline":"Keycloak SAML Broken has Authentication Bypass by Primary Weakness","id":"CVE-2026-3047","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":8.1,"headline":"Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher","id":"CVE-2026-15573","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":8.1,"headline":"Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers","id":"CVE-2026-16102","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":8.1,"headline":"Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users","id":"CVE-2026-1609","kev_date_added":null,"published":"2026-07-16"},{"cvss_score":8.1,"headline":"Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion","id":"CVE-2026-11800","kev_date_added":null,"published":"2026-06-25"},{"cvss_score":8.1,"headline":"Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison","id":"CVE-2026-9800","kev_date_added":null,"published":"2026-06-25"}],"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":"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":"2025-11-11","vendors":["Red Hat"]},"summary":"Attackers can hijack active Keycloak sessions and take over accounts by exploiting a flaw in the re-authentication mechanism when users cancel login prompts.","url":"https://insights.sbomify.com/CVE-2023-6787/"}