How severe is CVE-2026-14537?

CVE-2026-14537 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-14537 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-14537?

CVE-2026-14537 primarily affects Google Mcp Toolbox For Databases. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-14537?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-14537 published?

CVE-2026-14537 was published on 2026-07-31 and last updated on 2026-08-08.

CVE-2026-14537

CVE-2026-14537 is a critical-severity vulnerability in Google Mcp Toolbox For Databases with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.1
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Google Mcp Toolbox For Databases
Published: 2026-07-31
Last modified: 2026-08-08

Description

Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active.

Frequently asked questions

What is CVE-2026-14537?: Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active.
How severe is CVE-2026-14537?: CVE-2026-14537 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-14537 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-14537?: CVE-2026-14537 primarily affects Google Mcp Toolbox For Databases. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-14537?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-14537 published?: CVE-2026-14537 was published on 2026-07-31 and last updated on 2026-08-08.

References

https://github.com/googleapis/mcp-toolbox/pull/3435

Affected products (2)

cpe:2.3:a:google:mcp_toolbox_for_databases:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:google:mcp_toolbox_for_databases:1.4.0:*:*:*:*:*:*:*

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Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-69555 — Critical (CVSS 10.0): Incorrect authorization in Azure Arc allows an unauthorized attacker to elevate privileges over a network.
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CVE-2026-27302 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Incorrect Authorization vulnerability that could result in arbitrary…
CVE-2026-48449 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Incorrect Authorization vulnerability that could result in arbitrary…
CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…

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