CVE-2026-59971: MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases

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CRITICAL 10.0REMOTEWATCHLIST

CVE-2026-59971 is a critical-severity flaw (CVSS 10.0) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases. Prior to 0.4.2, setting MCP_TRANSPORT=sse causes src/mysql_mcp_server/server.py to construct SseServerTransport without security_settings or enable_dns_rebinding_protection, while the Starlette routes /, /sse, and /messages/ have no authentication and the service binds to 0.0.0.0 by default. A network attacker can directly reach execute_sql,

Why this priority

Critical severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-306, CWE-346
Published	2026-09-15
Last modified	2026-09-30

Publisher (CNA): GitHub, Inc.

Last updated 2026-09-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-09-15 15:17 UTCPublished CVE record published
2026-09-30 17:43 UTCUpdated Record last modified

Exact fixes by distribution

Python (pip) · mysql-mcp-server · FIXED · 0.4.2 · vulnerable: < 0.4.2 · source

pip install --upgrade "mysql-mcp-server>=0.4.2" pip show mysql-mcp-server

Fedora 46 · icecat · FIXED · 153.6.0-2.rh1.fc46 · FEDORA-2026-25e05b5320 · source

sudo dnf upgrade --advisory=FEDORA-2026-25e05b5320

Fedora ELN · edk2 · FIXED · 20260812-14.eln159 · FEDORA-2026-8850ef9153 · source

sudo dnf upgrade --advisory=FEDORA-2026-8850ef9153

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-59971?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-59971 being exploited?

CVE-2026-59971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-59971 affect?

CVE-2026-59971 affects affected software. Severity is critical (CVSS 10.0). MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases. Prior to 0.4.2, setting MCP_TRANSPORT=sse causes src/mysql_mcp_server/server.py to construct SseServerTransport without security_setti

How urgent is CVE-2026-59971?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

MySQL vulnerabilities

References

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