CVE-2026-42208

LiteLLM: SQL injection in Proxy API key verification

Published May 8, 2026 CVSS 4.0 · 9.3 Critical EPSS 89.4% KEV · Listed
Description
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version 1.83.7, a database query used during proxy API key checks mixed the caller-supplied key value into the query text instead of passing it as a separate parameter. An unauthenticated attacker could send a specially crafted Authorization header to any LLM API route (for example POST /chat/completions) and reach this query through the proxy's error-handling path. An attacker could read data from the proxy's database and may be able to modify it, leading to unauthorised access to the proxy and the credentials it manages. This issue has been patched in version 1.83.7.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-r75f-5x8p-qvmc LiteLLM has SQL Injection in Proxy API key verification
History
Type Values Removed Values Added
First Time appeared Litellm
Litellm litellm
CPEs cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*
Vendors & Products Litellm
Litellm litellm
Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-05-08T00:00:00+00:00', 'dueDate': '2026-05-11T00:00:00+00:00'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A flaw was found in LiteLLM. A database query used for proxy API key checks incorrectly incorporated caller-supplied key values directly into the query. This vulnerability allows an unauthenticated attacker to send a specially crafted Authorization header to any Large Language Model (LLM) API route, exploiting the proxy's error-handling path. Successful exploitation could enable the attacker to read and potentially modify data within the proxy's database, leading to unauthorized access to the proxy and its managed credentials. LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version 1.83.7, a database query used during proxy API key checks mixed the caller-supplied key value into the query text instead of passing it as a separate parameter. An unauthenticated attacker could send a specially crafted Authorization header to any LLM API route (for example POST /chat/completions) and reach this query through the proxy's error-handling path. An attacker could read data from the proxy's database and may be able to modify it, leading to unauthorised access to the proxy and the credentials it manages. This issue has been patched in version 1.83.7.
Title LiteLLM: LiteLLM: Unauthorized data access and modification via SQL injection LiteLLM: SQL injection in Proxy API key verification
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Type Values Removed Values Added
First Time appeared Berriai
Berriai litellm
Vendors & Products Berriai
Berriai litellm
Type Values Removed Values Added
Description A flaw was found in LiteLLM. A database query used for proxy API key checks incorrectly incorporated caller-supplied key values directly into the query. This vulnerability allows an unauthenticated attacker to send a specially crafted Authorization header to any Large Language Model (LLM) API route, exploiting the proxy's error-handling path. Successful exploitation could enable the attacker to read and potentially modify data within the proxy's database, leading to unauthorized access to the proxy and its managed credentials.
Title LiteLLM: LiteLLM: Unauthorized data access and modification via SQL injection
Weaknesses CWE-89
References
Metrics threat_severity

None

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Critical

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 15, 2026, 12:58 AM
Reserved
Apr 25, 2026, 5:04 AM
Status
Analyzed
Published
May 8, 2026, 4:16 AM
Modified
Oct 26, 2026, 8:10 PM
Severity
Critical
Public date
Apr 28, 2026, 12:00 AM