Auth bypass in Berriai Litellm
CVE-2026-47101
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (70.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.001
Affected products
- Berriai Litellm — versions 0
- Litellm
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gist.github.com/13ph03nix/9ec616e1fdc77b3673509c60206e827f (Exploit, technical-description, Third Party Advisory, exploit, Mitigation)
- huntr.com/bounties/8e75edfb-ff05-4e63-bfca-2d93d03fb3b9 (Exploit, Third Party Advisory, exploit, third-party-advisory)
- github.com/BerriAI/litellm/releases/tag/v1.83.14-stable (release-notes, Release Notes)
- github.com/BerriAI/litellm/commit/d910a95661fce3cdd36f3b06c03ecf9c46c6457c (Patch, patch)
- github.com/BerriAI/litellm/commit/2220f3076ac89bd2a2e3439acf57dcfbec2434c9 (Patch, patch)
- github.com/BerriAI/litellm/commit/5190bd07eb23a037745d86328096f54378f1614a (Patch, patch)
- www.vulncheck.com/advisories/litellm-privilege-escalation-via-api-key-generation (Third Party Advisory, third-party-advisory)
- www.obsidiansecurity.com/blog/litellm-privilege-escalation-rce (technical-description, exploit)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-47101?
- CVE-2026-47101 is a high-severity vulnerability in Berriai Litellm, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-05-21.
- How severe is CVE-2026-47101?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-47101 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.