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Description

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.

PUBLISHED Reserved 2026-05-18 | Published 2026-05-21 | Updated 2026-05-21 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Incorrect Authorization

Product status

Default status
affected

Any version before 1.83.14
affected

Credits

Fenix Qiao (aka 13ph03nix) from Obsidian Security finder

References

gist.github.com/13ph03nix/9ec616e1fdc77b3673509c60206e827f technical-description exploit

huntr.com/bounties/8e75edfb-ff05-4e63-bfca-2d93d03fb3b9 third-party-advisory exploit

github.com/BerriAI/litellm/releases/tag/v1.83.14-stable release-notes

github.com/...ommit/d910a95661fce3cdd36f3b06c03ecf9c46c6457c patch

github.com/...ommit/2220f3076ac89bd2a2e3439acf57dcfbec2434c9 patch

github.com/...ommit/5190bd07eb23a037745d86328096f54378f1614a patch

www.vulncheck.com/...ilege-escalation-via-api-key-generation third-party-advisory

cve.org (CVE-2026-47101)

nvd.nist.gov (CVE-2026-47101)

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