CVE-2026-59971 MySQL MCP Server - DNS Rebinding

MySQL MCP Server < 0.4.2 contains a DNS rebinding and unauthenticated access vulnerability caused by insecure SseServerTransport configuration and lack of authentication on key routes, letting network attackers disclose and modify database contents and potentially execute code if FILE privileges exist, exploit requires network access and victim browser interaction.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.42% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
DNS Rebinding
Impact
Information Disclosure, Data Tampering, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to version 0.4.2 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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