CVE-2026-48039

Published: Ago 07, 2026 Last Modified: Ago 07, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none

Description

AI Translation Available

Meta Ads MCP is a Model Context Protocol (MCP) server that lets AI assistants run Meta Ads. Prior to version 1.0.109, `AuthInjectionMiddleware.dispatch()` at `http_auth_integration.py:272` unconditionally forwards unauthenticated Streamable HTTP requests to downstream MCP tool handlers without issuing a `401` response, allowing any network-reachable caller to invoke MCP tools without authentication. When no per-request credential is present, tool handlers fall back to the `META_ACCESS_TOKEN` environment variable, and when the downstream Meta Graph API call fails, `api.py:263–269` serialises the raw `httpx` request URL—including the operator's `access_token` as a query parameter—into the JSON-RPC response body, delivering the credential to the unauthenticated caller. Version 1.0.109 fixes the issue.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0034
Percentile
0,3th
Updated

EPSS Score Trend (Last 3 Days)

287

Improper Authentication

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability Access Control
Potential Impacts:
Read Application Data Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: Not Technology-Specific, Web Based, ICS/OT
Likelihood of Exploit: High
View CWE Details
https://github.com/pipeboard-co/meta-ads-mcp/security/advis…
https://github.com/pipeboard-co/meta-ads-mcp/security/advisories/GHSA-9gw6-46qc…
https://github.com/pipeboard-co/meta-ads-mcp/releases/tag/1…
https://github.com/pipeboard-co/meta-ads-mcp/releases/tag/1.0.109
https://github.com/pipeboard-co/meta-ads-mcp/security/advis…
https://github.com/pipeboard-co/meta-ads-mcp/security/advisories/GHSA-9gw6-46qc…
https://github.com/pypa/advisory-database/tree/main/vulns/m…
https://github.com/pypa/advisory-database/tree/main/vulns/meta-ads-mcp/PYSEC-20…