{"schema":"threatline.record/2","record":{"id":"CVE-2026-107910","aliases":[],"summary":"Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling","details":"An improper authentication vulnerability in the is_authenticated function (src/bolt/bolt_api.c) in FalkorDB before 4.20.0 allows a remote unauthenticated attacker to execute graph queries without credentials through the Bolt endpoint. The function decides whether a password is required by issuing an empty AUTH command to Redis and treats only a WRONGPASS error as meaning that a password is required; any other error, such as LOADING while a dataset is being loaded, MASTERDOWN during replication failover, or OOM under memory pressure, causes the client to be treated as authenticated. Only deployments that enable the Bolt endpoint (BOLT_PORT, disabled by default) are affected.","categories":["Unclassified"],"product":"FalkorDB","vendor":"FalkorDB","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107910","source_modified_at":"2026-10-15T16:06:12.963Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"FalkorDB","vendor":"FalkorDB","versions":[{"version":"0","lessThan":"4.20.0","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107910","source_modified_at":"2026-10-15T16:06:12.963Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"FalkorDB","ecosystem":null},"version":"4.20.0","basis":"first unaffected version stated in the CVE record"}],"cvss":9.2,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00477,"percentile":0.40244,"score_date":"2026-10-23"},"published_at":"2026-10-09T05:08:13.092Z","modified_at":"2026-10-15T16:06:12.963Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107910","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T16:06:12.963Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107910","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/FalkorDB/FalkorDB/pull/2170","tags":["patch"]},{"source":"CVE List","url":"https://github.com/FalkorDB/FalkorDB/commit/0b11a00b34b25c4d4fdfe55f0a35c8a00593bd7d","tags":["patch"]},{"source":"CVE List","url":"https://github.com/FalkorDB/FalkorDB/releases/tag/v4.20.0","tags":["release-notes"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-15T16:05:40.330131Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T16:06:12.963Z","content_hash":"7b3efe06d50ccba5cab0961e17c75cd6a21967f81b55d65ba270d919f428ebd5"}}