What is CVE-2026-48039?

CVE-2026-48039 is a critical-severity vulnerability in Pipeboard-co Meta-ads-mcp, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-08-07.

How severe is CVE-2026-48039?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Pipeboard-co Meta-ads-mcp

CVE-2026-48039

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 Streamabl…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Pipeboard-co Meta-ads-mcp — versions < 1.0.109

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-48039?: CVE-2026-48039 is a critical-severity vulnerability in Pipeboard-co Meta-ads-mcp, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-08-07.
How severe is CVE-2026-48039?: Critical severity. CVSS v3 base score is 9.1 out of 10.