CVE-2026-14540: A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Go

Routine

MEDIUM 6.1UPGRADE

CVE-2026-14540 is a medium-severity flaw (CVSS 6.1) affecting mcp toolbox for databases. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0. While the toolbox implements baseline input sanitization for user-controlled parameters, the underlying HTTP client (internal/sources/http/http.go) fails to safely regulate request redirection boundaries. Specifically, the client is initialized without a restrictive CheckRedirect policy hook

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-07-31
Last modified	2026-10-23

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

Am I affected?

Timeline

2026-07-31 02:16 UTCPublished CVE record published
2026-10-23 23:10 UTCUpdated Record last modified

google mcp toolbox for databases UPGRADE

Affected: >= 0.3.0 and < 1.5.0

Fixed in: 1.5.0

Safe to downgrade to: a release before 0.3.0

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 1.5.0 (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.

3. If no update is available yet, DOWNGRADE to a release before 0.3.0 (Debian / Ubuntu)

apt-cache madison mcp-toolbox-for-databases sudo apt install mcp-toolbox-for-databases=<VERSION_BEFORE_0.3.0> sudo apt-mark hold mcp-toolbox-for-databases

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mcp-toolbox-for-databases sudo dnf downgrade mcp-toolbox-for-databases-<VERSION_BEFORE_0.3.0> sudo dnf versionlock add mcp-toolbox-for-databases

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-14540?

mcp toolbox for databases: upgrade to 1.5.0. Exact commands for each OS are on this page.

Is CVE-2026-14540 being exploited?

CVE-2026-14540 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-2026-14540 affect?

CVE-2026-14540 affects mcp toolbox for databases. Severity is medium (CVSS 6.1). A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0. While the toolbox implements baseline input sanitization for user-controlled parame

How urgent is CVE-2026-14540?

Priority 22/100. No elevated risk signals yet.

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References

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