{"id":"CVE-2026-111704","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-111704","generatedAt":"2026-10-28T00:05:18.131Z","title":"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.","description":"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.","published":"2026-10-16T18:17:54.000Z","lastModified":"2026-10-21T22:16:47.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-306"],"affected":[],"epss":{"score":0.00653,"percentile":0.51017,"date":"2026-10-26","history":[{"date":"2026-10-17","score":0.00508,"percentile":0.42106}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T18:17:54.000Z","detail":{"score":"9.3","severity":"CRITICAL","publishedAt":"2026-10-16T18:17:54.370Z"},"summary":"New CVE, critical severity (CVSS 9.3)."}],"references":[{"url":"https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cdc599771bb667a30bc03f5c/langchat-auth/src/main/java/cn/langchat/auth/controller/AigcUserController.java#L25-L60","source":"disclosure@vulncheck.com"},{"url":"https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cdc599771bb667a30bc03f5c/langchat-auth/src/main/java/cn/langchat/auth/service/impl/AuthServiceImpl.java#L51-L58","source":"disclosure@vulncheck.com"},{"url":"https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cdc599771bb667a30bc03f5c/langchat-server/src/main/java/cn/langchat/server/config/WebAsyncConfig.java#L17-L33","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@hieuPenguinnn/langchat-missing-global-auth-credential-exposure","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/langchat-through-commit-2a6285a-missing-authentication-on-rest-api-controllers","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@hieuPenguinnn/langchat-missing-global-auth-credential-exposure","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-111704","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}