CVE-2026-54504 MCP Documentation Server - Authentication Bypass

MCP Documentation Server 1.13.0 to 1.13.1 contains an authentication bypass caused by binding the document-management API to all network interfaces, letting network-reachable attackers enumerate, read, insert, delete, and tamper documents without credentials, exploit requires network access to the service.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to version 1.13.1 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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