CVE-2026-12773

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

CVSS v3 7.3 HIGH
CVSS v2.0 7.5 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e	Exploit Third Party Advisory
https://vuldb.com/cve/CVE-2026-12773	Third Party Advisory VDB Entry
https://vuldb.com/submit/811282	Exploit Third Party Advisory VDB Entry
https://vuldb.com/vuln/372515	Third Party Advisory VDB Entry
https://vuldb.com/vuln/372515/cti	Permissions Required VDB Entry
https://access.redhat.com/security/cve/CVE-2026-12773
https://bugzilla.redhat.com/show_bug.cgi?id=2491112
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12773.json
https://vuldb.com/submit/811282	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-21 04:16

Updated : 2026-07-15 02:18

NVD link : CVE-2026-12773

Mitre link : CVE-2026-12773

CVE.ORG link : CVE-2026-12773

JSON object : View

Products Affected

litellm

litellm

CWE

CWE-287

Improper Authentication

CWE-303

Incorrect Implementation of Authentication Algorithm

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"defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:openshift_ai"], "vendor": "Red Hat", "product": "Red Hat OpenShift AI (RHOAI)", "packageName": "rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-06-21T04:16:28.230", "references": [{"url": "https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e", "tags": ["Exploit", "Third Party Advisory"], "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/cve/CVE-2026-12773", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/submit/811282", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/vuln/372515", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/vuln/372515/cti", "tags": ["Permissions Required", "VDB Entry"], "source": 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Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure."}], "lastModified": "2026-07-15T02:18:11.057", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0007D8EB-DE1E-40D7-B5E8-84ECC0618D13", "versionEndExcluding": "1.59.9"}], "operator": "OR"}]}], "sourceIdentifier": "cna@vuldb.com"}