{"schema":"threatline.record/2","record":{"id":"CVE-2026-111704","aliases":[],"summary":"LangChat through commit 2a6285a Missing Authentication on REST API Controllers","details":"LangChat through commit 2a6285a contains a missing authentication vulnerability that allows unauthenticated remote attackers to access REST controllers because no Sa-Token interceptor is registered. Attackers can query /api/v1/auth/users to read plaintext passwords, retrieve LLM provider API keys, create super-admin accounts, and modify or delete data.","categories":["Unclassified"],"product":"langchat","vendor":"LangChat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111704","source_modified_at":"2026-10-21T21:18:21.966Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"langchat","vendor":"LangChat","versions":[{"version":"0","lessThanOrEqual":"2a6285a6b8c51d51cdc599771bb667a30bc03f5c","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00508,"percentile":0.42547,"score_date":"2026-10-23"},"published_at":"2026-10-16T17:39:56.489Z","modified_at":"2026-10-21T21:18:21.966Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111704","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-21T21:18:21.966Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111704","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/langchat-missing-global-auth-credential-exposure","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cdc599771bb667a30bc03f5c/langchat-server/src/main/java/cn/langchat/server/config/WebAsyncConfig.java#L17-L33","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cdc599771bb667a30bc03f5c/langchat-auth/src/main/java/cn/langchat/auth/controller/AigcUserController.java#L25-L60","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cdc599771bb667a30bc03f5c/langchat-auth/src/main/java/cn/langchat/auth/service/impl/AuthServiceImpl.java#L51-L58","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/langchat-through-commit-2a6285a-missing-authentication-on-rest-api-controllers","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-21T21:17:55.459392Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-21T21:18:21.966Z","content_hash":"7809f162b0b753e5a3a2bd1838136d557d96c68cbec26624d8a863d9d4eb4da6"}}