CVE-2026-11720: A path traversal vulnerability exists in the HTTP tool URL builder of googleapis/mcp-toolbox. When constructi

Q: How do I fix CVE-2026-11720?

mcp toolbox for databases: upgrade to 1.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-11720 being exploited?

CVE-2026-11720 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-11720 affect?

CVE-2026-11720 affects mcp toolbox for databases. Severity is critical (CVSS 9.1). A path traversal vulnerability exists in the HTTP tool URL builder of googleapis/mcp-toolbox. When constructing downstream API requests, the URL builder substitutes user-controlled pathParams into the configured tool path and parses the re

Q: How urgent is CVE-2026-11720?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-11720 is a critical-severity flaw (CVSS 9.1) affecting mcp toolbox for databases. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A path traversal vulnerability exists in the HTTP tool URL builder of googleapis/mcp-toolbox. When constructing downstream API requests, the URL builder substitutes user-controlled pathParams into the configured tool path and parses the resulting string as a relative URL. While it checks that the input does not alter the scheme, host, or user info, it relies on ResolveReference for the final URL resolution. Because dot segments (../) are normali

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-06-29
Last modified	2026-10-25

Publisher (CNA): Google Inc. · Vendor: google

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-29 18:16 UTCPublished CVE record published
2026-10-25 21:10 UTCUpdated Record last modified

google mcp toolbox for databases UPGRADE

Affected: < 1.3.0

Fixed in: 1.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mcp-toolbox-for-databases || rpm -q mcp-toolbox-for-databases || mcp-toolbox-for-databases --version

2. UPGRADE to 1.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mcp-toolbox-for-databases

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mcp-toolbox-for-databases

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-11720?

mcp toolbox for databases: upgrade to 1.3.0. Exact commands for each OS are on this page.

Is CVE-2026-11720 being exploited?

CVE-2026-11720 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-2026-11720 affect?

CVE-2026-11720 affects mcp toolbox for databases. Severity is critical (CVSS 9.1). A path traversal vulnerability exists in the HTTP tool URL builder of googleapis/mcp-toolbox. When constructing downstream API requests, the URL builder substitutes user-controlled pathParams into the configured tool path and parses the re

How urgent is CVE-2026-11720?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

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References

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