LiteLLM prior to 1.83.14 allows an authenticated internal_user to create API keys with access to routes that their role does not permit. When generating a key, the allowed_routes field is stored without verifying that the specified routes fall within the user's own permissions. A key created with access to admin-only routes can then be used to reach those routes successfully, bypassing the role-based access controls that would otherwise block the request, enabling full privilege escalation from internal_user to proxy_admin.
https://www.obsidiansecurity.com/blog/litellm-privilege-escalation-rce
https://huntr.com/bounties/8e75edfb-ff05-4e63-bfca-2d93d03fb3b9
https://gist.github.com/13ph03nix/9ec616e1fdc77b3673509c60206e827f
https://latesthackingnews.com/2026/06/16/litellm-vulnerability-chain-ai-gateway-patch/
https://thehackernews.com/2026/06/litellm-vulnerability-chain-lets-low.html
https://github.com/BerriAI/litellm/releases/tag/v1.83.14-stable
https://github.com/BerriAI/litellm/commit/d910a95661fce3cdd36f3b06c03ecf9c46c6457c
https://github.com/BerriAI/litellm/commit/5190bd07eb23a037745d86328096f54378f1614a
https://github.com/BerriAI/litellm/commit/2220f3076ac89bd2a2e3439acf57dcfbec2434c9
Published: 2026-05-21
Updated: 2026-06-11
Base Score: 9
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
Severity: High
Base Score: 8.8
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: High
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00051