Detections
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Echo: litellm: security update to 1.83.7

high Tenable Cloud Security Plugin ID 461341

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.74.2
 to before version 1.83.7, two endpoints used to preview an MCP server before saving it — POST /mcp-
 rest/test/connection and POST /mcp-rest/test/tools/list — accepted a full server configuration in the
 request body, including the command, args, and env fields used by the stdio transport. When called with a
 stdio configuration, the endpoints attempted to connect, which spawned the supplied command as a
 subprocess on the proxy host with the privileges of the proxy process. The endpoints were gated only by a
 valid proxy API key, with no role check. Any authenticated user — including holders of low-privilege
 internal-user keys — could therefore run arbitrary commands on the host. This issue has been patched in
 version 1.83.7. (CVE-2026-42271)

Solution

Update the litellm library and its related packages to version 1.83.7 or later.

Plugin Details

Severity: High

ID: 461341

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Self-Hosted Container Security, Tenable Cloud Security

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

Percentile: 99.82

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-42271

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 8.7

Threat Vector: CVSS:4.0/E:A

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/17/2026

Vulnerability Publication Date: 4/25/2026

CISA Known Exploited Vulnerability Due Dates: 6/22/2026

Exploitable With

Metasploit (BerriAI LiteLLM Proxy MCP Test Endpoint Command Execution)

Reference Information

CVE: CVE-2026-42271