Dashboard / CVE-2026-54140

CVE-2026-54140

HIGH
MEDIUM Priority: 0.05 BB Relevance: 57/100
Published: 2026-11-05 Modified: 2026-11-09 First seen: 2026-11-05 Status: active

Attack Surface

Network No Auth Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Required
S: Changed
C: High
I: High
A: High

Description

OpenHuman is an open-source agent harness available as a desktop application and Rust library. Before 0.57.13, OpenHuman places names, descriptions, titles, and parameter definitions returned by configured external MCP servers into the agent model context without neutralizing instructions or bounding the descriptive fields. The McpRemoteTool records produced by list_tools preserve this remote content, while tool filtering considers the tool name and the prompt-injection detector screens user messages rather than MCP definitions. A malicious or compromised MCP server can therefore return a poisoned description that is evaluated on every agent turn and may direct the model to invoke other available tools, disclose accessible data, or perform unauthorized actions without a separate malicious user message. The issue affects users who configure an attacker-controlled or compromised MCP server. This issue is fixed in version 0.57.13.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
tinyhumansai openhuman < 0.57.13
tinyhumansai openhuman < 0.57.13

References & Advisories (4)

Bug Bounty Relevance

57 / 100
✓ Network accessible
✓ No authentication

CVSS Score

8.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS — Exploitation Probability

0.55%
Raw Score 0.005540
Percentile 46.8%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00554
2026-11-13
0.00554
2026-11-12
0.00554
2026-11-10
0.00554
2026-11-09
0.00554
2026-11-08
0.00554
2026-11-07
0.00554
2026-11-06
0.00554

Intelligence Sources

mitre ref →
nvd ref →

External Links