Detections
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SCA: security update for github.com/googleapis/mcp-toolbox (GHSA-5gf6-gc35-xjpc)

high Tenable Cloud Security Plugin ID 443589

Description

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

 - An authenticated authorization bypass vulnerability exists in MCP Toolbox for Databases due to missing
 scope enforcement across older protocol handlers. While the 2025-11-25 protocol version handler correctly
 enforces per-tool restrictions defined by scopesRequired, older supported protocol versions (2025-06-18,
 2025-03-26, and 2024-11-05) omit this check. An authenticated client with low-privilege tokens (e.g.,
 read) can bypass the intended per-tool scope restrictions and execute high-privilege tools (e.g., admin)
 simply by specifying an older protocol version in the MCP-Protocol-Version header, or by omitting the
 header entirely (which causes the server to default to the vulnerable 2024-11-05 handler).
 (CVE-2026-11719)

Solution

Update the github.com/googleapis/mcp-toolbox library and its related packages to version 1.4.0 or later.

See Also

https://github.com/advisories/GHSA-5gf6-gc35-xjpc

Plugin Details

Severity: High

ID: 443589

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 6/19/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.96

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-11719

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.6

Threat Score: 6.2

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/18/2026

Vulnerability Publication Date: 6/18/2026

Reference Information

CVE: CVE-2026-11719

cwe: CWE-862