Chainguard: multiple kibana-9.3 packages: security update to 9.3.8-r7

medium Tenable Cloud Security Plugin ID 476575

Description

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

- The Model Context Protocol TypeScript SDK provides TypeScript client and server implementations of the
Model Context Protocol. From 1.6.0 until 1.32.0 in @modelcontextprotocol/sdk, from 2.0.0 until 2.3.0 in
@modelcontextprotocol/server, from 2.0.0 until 2.0.2 in @modelcontextprotocol/express, and from 2.0.0
until 2.3.1 in @modelcontextprotocol/server-legacy, server-side bearer authentication could accept a valid
access token issued for a different service because the SDK did not enforce the token audience. The
affected surface is server-side HTTP bearer authentication. The trigger is a valid token whose audience
names another service. The authorization server must issue tokens for multiple services, and the
application's verifyAccessToken() must not independently validate aud. Applications already validating aud
inside verifyAccessToken() are not affected. An attacker with a token for another service could
authenticate to the MCP server and obtain the confidentiality and integrity capabilities granted to an
authenticated caller. Upgrading alone leaves the new audience validation disabled. Operators must enable
audience validation and provide the token audience together. Enabling only the expected audience check
causes every request to receive HTTP 401. This issue is fixed in @modelcontextprotocol/sdk 1.32.0,
@modelcontextprotocol/server 2.3.0, @modelcontextprotocol/express 2.0.2, and @modelcontextprotocol/server-
legacy 2.3.1. (CVE-2026-111771)

Solution

Update the kibana-9.3 library and its related packages to version 9.3.8-r7 or later.

Plugin Details

Severity: Medium

ID: 476575

Version: Revision 1.2

Type: Local

Published: 10/22/2026

Updated: 11/6/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.11

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-111771

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/20/2026

Reference Information

CVE: CVE-2026-111771