CVE-2026-54547 Meta Ads MCP - Broken Access Control

Meta Ads MCP < 1.0.115 contains a broken access control vulnerability caused by improper authentication token validation in AuthInjectionMiddleware, letting network attackers execute MCP tools with operator's Meta credentials, exploit requires use of streamable-http transport and presence of META_ACCESS_TOKEN.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.52% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control, Data Tampering, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to version 1.0.115 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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