LiteLLM allows a user to modify their own user_role via the /user/update endpoint

LiteLLM prior to 1.83.10 allows a user to modify their own user_role via the /user/update endpoint. While the endpoint correctly restricts users to updating only their own account, it does not restrict which fields may be changed. A user who can reach this endpoint can set their role to proxy_admin, gaining full administrative access to LiteLLM including all users, teams, keys, models, and prompt history. Users with the org_admin role have legitimate access to this endpoint and can exploit this vulnerability without chaining any additional flaw.

CVSS 3.1

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

Severity from

GitHub (reviewed advisory)

Weakness

CWE-863

Also known as

CVE-2026-47102, PYSEC-2026-2600

• nvd.nist.gov/vuln/detail/CVE-2026-47102
• github.com/BerriAI/litellm/pull/25541
• github.com/BerriAI/litellm/commit/128d32d2494b759c5d15da3452452af4c6a34c01
• github.com/BerriAI/litellm/commit/e6f18ce75b111c9b93dc15c72894cbdeb53177ce
• gist.github.com/13ph03nix/9ec616e1fdc77b3673509c60206e827f
• github.com/BerriAI/litellm
• github.com/BerriAI/litellm/releases/tag/v1.83.10-stable
• huntr.com/bounties/8e75edfb-ff05-4e63-bfca-2d93d03fb3b9
• www.obsidiansecurity.com/blog/litellm-privilege-escalation-rce
• www.vulncheck.com/advisories/litellm-privilege-escalation-via-user-update