SCA: security update for @apify/actors-mcp-server (GHSA-6gr2-qh89-hxwm)

high Tenable Self-Hosted Container Security Plugin ID 444248

Description

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

- The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers,
and automation tools available on the Apify Store. Prior to 0.10.11, getActorMCPServerURL in
src/mcp/actors.ts concatenates the trusted Actor standby URL with the attacker-controlled webServerMcpPath
from an Actor definition without verifying the resulting origin, allowing a malicious Actor publisher to
use a userinfo-style authority value to redirect connectMCPClient to a third-party host. The call-actor,
fetch-actor-details, and actor-mcp tool-loading paths pass this URL to transports in src/mcp/client.ts
that attach the victim Authorization bearer token, exposing the Apify API token and enabling access to
Actors, stored data, and billable compute. A victim must invoke or inspect the attacker-controlled Actor.
This issue is fixed in version 0.10.11. (CVE-2026-50143)

Solution

Update the @apify/actors-mcp-server library and its related packages to version 0.10.11 or later.

See Also

https://github.com/advisories/GHSA-6gr2-qh89-hxwm

Plugin Details

Severity: High

ID: 444248

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 7/2/2026

Updated: 8/19/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-50143

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 7/1/2026

Reference Information

CVE: CVE-2026-50143

cwe: CWE-918