{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-5423 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-5423 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5423 is a high-severity authentication bypass vulnerability in neo4j graphql, published on 6 Aug 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-2026-5423 and fix it if it is affected.\n\nWhat it is: CVE-2026-5423 is a high-severity authentication bypass vulnerability in neo4j graphql, published on 6 Aug 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-2026-5423 in the wild and no public exploit code.\n\nAffected product: neo4j graphql. 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-2026-5423/ (Markdown: https://insights.sbomify.com/CVE-2026-5423/index.md)","id":"CVE-2026-5423","markdown":"https://insights.sbomify.com/CVE-2026-5423/index.md","name":"CVE-2026-5423","record":{"aliases":["GHSA-fcpg-3fw5-vc65"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Neo4j GraphQL library","requires_auth":"none","summary":"Unauthenticated attackers can forge JWT claims in GraphQL subscriptions to bypass authentication and access restricted data.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Neo4j","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-302","name":"Authentication Bypass by Assumed-Immutable Data"}],"description":"@neo4j/graphql library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription connectionParams. As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g. sub, roles) in connectionParams.jwt and have them accepted as authenticated identity for the purposes of @authentication and @subscriptionsAuthorization directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users.\nUpgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix.","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":"Subscription Authentication Bypass via Unverified connectionParams.jwt","id":"CVE-2026-5423","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":"Widgets for Social Photo Feed \u003c= 1.7.9 - Unauthenticated Stored Cross-Site Scripting via feed_data","id":"CVE-2026-5425"},"packages":[],"prev":{"headline":"Path Traversal in jupyter/jupyter","id":"CVE-2026-5422"},"products":["graphql"],"published":"2026-08-06","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":"partial"},"state":"PUBLISHED","updated":"2026-08-06","vendors":["neo4j"]},"summary":"Unauthenticated attackers can forge JWT claims in GraphQL subscriptions to bypass authentication and access restricted data.","url":"https://insights.sbomify.com/CVE-2026-5423/"}