{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40351 exists.","fix":"No fix has been published for CVE-2026-40351 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40351 is a critical authentication bypass vulnerability in labring FastGPT, published on 17 Apr 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-2026-40351 and fix it if it is affected.\n\nWhat it is: CVE-2026-40351 is a critical authentication bypass vulnerability in labring FastGPT, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40351 exists.\n\nAffected product: labring FastGPT. 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-2026-40351/ (Markdown: https://insights.sbomify.com/CVE-2026-40351/index.md)","id":"CVE-2026-40351","markdown":"https://insights.sbomify.com/CVE-2026-40351/index.md","name":"CVE-2026-40351","record":{"aliases":["GHSA-x8mx-2mr7-h9xg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"AI Agent Platform","requires_auth":"none","summary":"Unauthenticated attackers can bypass password checks via NoSQL injection to log in as any user, including administrators, in FastGPT.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"fastgpt","vendor":"fastgpt"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-943","name":"Improper Neutralization of Special Elements in Data Query Logic"}],"description":"FastGPT is an AI Agent building platform. In versions prior to 4.14.9.5, the password-based login endpoint uses TypeScript type assertion without runtime validation, allowing an unauthenticated attacker to pass a MongoDB query operator object (e.g., {\"$ne\": \"\"}) as the password field. This NoSQL injection bypasses the password check, enabling login as any user including the root administrator. This issue has been fixed in version 4.14.9.5.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass","id":"CVE-2026-40351","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"FastGPT: NoSQL Injection in updatePasswordByOld Leads to Account Takeover","id":"CVE-2026-40352"},"packages":[],"prev":{"headline":"Missing authorization in movary","id":"CVE-2026-40350"},"products":["FastGPT"],"published":"2026-04-17","related":[{"cvss_score":10,"headline":"FastGPT: Unauthenticated SSRF via httpTools Endpoint Leads to Internal API Key Theft","id":"CVE-2026-34162","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":9.4,"headline":"FastGPT has Arbitrary Code Execution in GitHub Actions via pull_request_target in fastgpt-preview-image.yml","id":"CVE-2026-33075","kev_date_added":null,"published":"2026-03-20"},{"cvss_score":8.8,"headline":"FastGPT: NoSQL Injection in updatePasswordByOld Leads to Account Takeover","id":"CVE-2026-40352","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":7.7,"headline":"Server-Side Request Forgery via MCP Tools Endpoint in FastGPT","id":"CVE-2026-34163","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":6.9,"headline":"Cross-Site Request Forgery (CSRF) in FastGPT","id":"CVE-2026-26075","kev_date_added":null,"published":"2026-02-12"},{"cvss_score":6.9,"headline":"FastGPT Plugin forwarding request is not authenticated, posing a serious risk of attack","id":"CVE-2026-26003","kev_date_added":null,"published":"2026-02-10"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-20","vendors":["labring"]},"summary":"Unauthenticated attackers can bypass password checks via NoSQL injection to log in as any user, including administrators, in FastGPT.","url":"https://insights.sbomify.com/CVE-2026-40351/"}