{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54040 exists.","fix":"No fix has been published for CVE-2026-54040 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-54040 is a medium-severity vulnerability in Librechat Librechat, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-54040 and fix it if it is affected.\n\nWhat it is: CVE-2026-54040 is a medium-severity vulnerability in Librechat Librechat, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54040 exists.\n\nAffected product: Librechat Librechat. 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-2026-54040/ (Markdown: https://insights.sbomify.com/CVE-2026-54040/index.md)","id":"CVE-2026-54040","markdown":"https://insights.sbomify.com/CVE-2026-54040/index.md","name":"CVE-2026-54040","record":{"aliases":["GHSA-h59w-x9h4-m6gv"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"LibreChat web application","requires_auth":"low_privilege","summary":"Attackers with stolen session tokens can regenerate 2FA backup codes without verification, bypassing two-factor authentication to take over accounts.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"librechat","vendor":"librechat"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/auth/2fa/backup/regenerate endpoint regenerates all 2FA backup codes without requiring any TOTP token or existing backup code verification. An attacker with a stolen session token can silently replace a victim's backup codes and use them to bypass 2FA login or disable 2FA entirely. This vulnerability is fixed in 0.8.4-rc1.","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":"LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass","id":"CVE-2026-54040","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"librechat:librechat","products":["librechat:librechat"],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Laci Synchroni Backend Vulnerable to Account Takeover / User Impersonation via Client-Side Configuration Manipulation","id":"CVE-2026-54047"},"packages":[],"prev":{"headline":"LibreChat: Incomplete Fix for CVE-2025-7105 — /api/convos/duplicate Lacks Rate Limiting Applied to /api/convos/fork","id":"CVE-2026-54037"},"products":["LibreChat"],"published":"2026-06-25","related":[{"cvss_score":9.6,"headline":"LibreChat Exfiltrates Server Secrets via MCP Server URL Injection","id":"CVE-2026-32625","kev_date_added":null,"published":"2026-06-02"},{"cvss_score":9.4,"headline":"Improper Access Control in danny-avila/librechat","id":"CVE-2024-11167","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":9.1,"headline":"LibreChat MCP Stdio Remote Command Execution","id":"CVE-2026-22252","kev_date_added":null,"published":"2026-01-12"},{"cvss_score":9.1,"headline":"LibreChat is vulnerable to Server-Side Request Forgery due to missing restrictions","id":"CVE-2025-69222","kev_date_added":null,"published":"2026-01-07"},{"cvss_score":9.1,"headline":"Path traversal in n/a","id":"CVE-2024-41704","kev_date_added":null,"published":"2024-07-22"},{"cvss_score":8.8,"headline":"Path Traversal in danny-avila/librechat","id":"CVE-2024-11170","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":8.6,"headline":"LibreChat JSON Injection in Chat POST Allows Remote Resource Inclusion and PXSS via Image Upload","id":"CVE-2025-66450","kev_date_added":null,"published":"2025-12-11"}],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-25","vendors":["danny-avila"]},"summary":"Attackers with stolen session tokens can regenerate 2FA backup codes without verification, bypassing two-factor authentication to take over accounts.","url":"https://insights.sbomify.com/CVE-2026-54040/"}