LiteLLM: Authenticated SSRF and provider-credential exfiltration via unvalidated request-body routing parameters

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-84377
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-02 18:21:28 UTC
Updated2026-09-02 18:21:28 UTC
DescriptionLiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to versions 1.88.6 and 1.96.2, any authenticated LiteLLM proxy user could redirect an outbound provider call to a destination the user controls and cause the proxy to send its configured provider credentials to that destination. Request validation in litellm/proxy/auth/auth_utils.py, litellm/proxy/common_request_processing.py, litellm/proxy/health_endpoints/_health_endpoints.py, litellm/proxy/image_endpoints/endpoints.py, and litellm/proxy/litellm_pre_call_utils.py used incomplete checks that did not cover every sensitive parameter or inspect equivalent values across nested request fields, path values, and bracket-notation form data. Routing and credential parameters including api_base, base_url, model_list, fallbacks, and litellm_credential_name could therefore be applied without clearing the operator's stored key, exposing upstream provider credentials and other configured secrets and permitting server-side requests to internal services reachable by the proxy. This issue is fixed in versions 1.88.6 and 1.96.2.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA BerriAI Litellm affected < 1.88.6 Not specified
CNA BerriAI Litellm affected >= 1.89.0, < 1.96.2 Not specified

References

ReferenceSourceLinkTags
github.com/BerriAI/litellm/security/advisories/GHSA-3cv6-jpf6-8222 [email protected] github.com
github.com/BerriAI/litellm/commit/473f72e63a9777d793fbbf57194d8ec4fb97bc1b [email protected] github.com
github.com/BerriAI/litellm/releases/tag/v1.96.2 [email protected] github.com
github.com/BerriAI/litellm/commit/c898d341c02299cf2506d0d8e84cc67953043593 [email protected] github.com
github.com/BerriAI/litellm/pull/36314 [email protected] github.com
github.com/BerriAI/litellm/pull/36011 [email protected] github.com
github.com/BerriAI/litellm/commit/820f247a6abba55cd87d130bef7bba7be3b29d37 [email protected] github.com
github.com/BerriAI/litellm/pull/36494 [email protected] github.com
github.com/BerriAI/litellm/releases/tag/v1.88.6 [email protected] github.com
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