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31492 vulnerabilities by Google
CVE-2026-14541 (GCVE-0-2026-14541)
Vulnerability from nvd – Published: 2026-07-31 01:48 – Updated: 2026-07-31 16:14
VLAI
EPSS
VEX
Title
Authentication Bypass and Audience Confusion in MCP Toolbox OAuth Provider
Summary
An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google mcp-toolbox version 1.4.0. When a Google authService is initialized with mcpEnabled: true but lacks an explicitly defined audience or clientId, the ValidateMCPAuth pipeline for opaque tokens skips audience validation entirely. As a result, the toolbox will accept any valid Google OAuth access token—even those minted for unrelated ecosystem applications—granting unauthorized clients access to protected tools and data backends.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - (Improper Authentication)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
1.4.0
(semver)
|
Credits
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CVE-2026-14540 (GCVE-0-2026-14540)
Vulnerability from nvd – Published: 2026-07-31 01:46 – Updated: 2026-07-31 16:12
VLAI
EPSS
VEX
Title
Server-Side Request Forgery via Unrestricted HTTP Redirection in MCP Toolbox
Summary
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 and lacks target IP validation. An attacker or a malicious data-driven prompt can supply a crafted path parameter that triggers an open redirect or a direct destination swap on the target backend, coercing the mcp-toolbox into blindly following the redirection and making unauthorized requests to internal or arbitrary external endpoints.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-918 - (Server-Side Request Forgery (SSRF))
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
0.3.0 , ≤ 1.4.0
(semver)
|
Credits
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CVE-2026-14539 (GCVE-0-2026-14539)
Vulnerability from nvd – Published: 2026-07-31 01:45 – Updated: 2026-07-31 16:11
VLAI
EPSS
VEX
Title
Denial of Service via Unrestricted Payload Buffering in MCP Toolbox
Summary
An allocation of resources without limits vulnerability in the HTTP handler component of Google mcp-toolbox versions up to and including 1.4.0 allows an unauthenticated attacker to cause a denial of service (DoS). The /mcp endpoint handler reads incoming payloads directly into system memory using an unrestricted buffer loop (io.ReadAll) without applying defensive constraints such as http.MaxBytesReader or pre-read Content-Length enforcement. By submitting a single, massive HTTP request body, an attacker can linearly consume available host memory until the runtime process is terminated by an Out-Of-Memory (OOM) error.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-770 - (Allocation of Resources Without Limits or Throttling)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
0.0.0 , ≤ 1.4.0
(semver)
|
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CVE-2026-14538 (GCVE-0-2026-14538)
Vulnerability from nvd – Published: 2026-07-31 01:42 – Updated: 2026-07-31 16:09
VLAI
EPSS
VEX
Title
BigQuery Dataset Allowlist Bypass via Metadata Dry-Run in MCP Toolbox
Summary
An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-sql tool component of Google mcp-toolbox versions 0.16.1 through 1.4.0 allows an authenticated attacker to bypass allowedDatasets validation checks. The toolbox relies on the BigQuery dry-run API to enforce dataset restrictions, but due to a fail-open logic flaw, it bypasses validation when the API returns an empty array for specialized constructs. This allows the attacker to extract structural DDL schemas for explicitly excluded datasets via INFORMATION_SCHEMA, and access downstream federated row data via EXTERNAL_QUERY connections.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
0.16.1 , ≤ 1.4.0
(semver)
|
Credits
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CVE-2026-14537 (GCVE-0-2026-14537)
Vulnerability from nvd – Published: 2026-07-31 01:38 – Updated: 2026-07-31 16:08
VLAI
EPSS
VEX
Title
Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - (Incorrect Authorization)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
1.3.0
Affected: v1.4.0 |
Credits
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CVE-2026-18019 (GCVE-0-2026-18019)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:21
VLAI
EPSS
VEX
Summary
Side-channel information leakage in Media in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1300 - Side-channel information leakage
Assigner
References
Impacted products
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CVE-2026-18018 (GCVE-0-2026-18018)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:09
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Updater in Google Chrome on Windows prior to 151.0.7922.72 allowed a local attacker to perform UI spoofing via a malicious file. (Chromium security severity: Low)
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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CVE-2026-18017 (GCVE-0-2026-18017)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-31 03:55
VLAI
EPSS
VEX
Summary
Use after free in Dawn in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Low)
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use after free
Assigner
References
Impacted products
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CVE-2026-18016 (GCVE-0-2026-18016)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:10
VLAI
EPSS
VEX
Summary
Insufficient policy enforcement in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Insufficient policy enforcement
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
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CVE-2026-18015 (GCVE-0-2026-18015)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:12
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Tint in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
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CVE-2026-18014 (GCVE-0-2026-18014)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:21
VLAI
EPSS
VEX
Summary
Insufficient validation of untrusted input in DevTools in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass navigation restrictions via a malicious file. (Chromium security severity: Low)
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Insufficient validation of untrusted input
Assigner
References
Impacted products
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CVE-2026-18013 (GCVE-0-2026-18013)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:24
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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CVE-2026-18012 (GCVE-0-2026-18012)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-31 03:55
VLAI
EPSS
VEX
Summary
Use after free in PDFium in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: Low)
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use after free
Assigner
References
Impacted products
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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},
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CVE-2026-18011 (GCVE-0-2026-18011)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 14:05
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a local attacker to obtain potentially sensitive information from process memory via physical access to the device. (Chromium security severity: Low)
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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CVE-2026-18010 (GCVE-0-2026-18010)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 16:08
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Passwords in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via malicious network traffic. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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"integrityImpact": "LOW",
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CVE-2026-18009 (GCVE-0-2026-18009)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 16:07
VLAI
EPSS
VEX
Summary
Insufficient validation of untrusted input in Passwords in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via malicious network traffic. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
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"integrityImpact": "LOW",
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"userInteraction": "REQUIRED",
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},
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CVE-2026-18008 (GCVE-0-2026-18008)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 16:06
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Settings in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via malicious network traffic. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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CVE-2026-18007 (GCVE-0-2026-18007)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:41
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Input in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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CVE-2026-18006 (GCVE-0-2026-18006)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:40
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Google Lens in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
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},
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CVE-2026-18005 (GCVE-0-2026-18005)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:37
VLAI
EPSS
VEX
Summary
Inappropriate implementation in WebXR in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Low)
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
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],
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CVE-2026-18004 (GCVE-0-2026-18004)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:33
VLAI
EPSS
VEX
Summary
Insufficient policy enforcement in Speech in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Insufficient policy enforcement
- CWE-284 - Improper Access Control
Assigner
References
Impacted products
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"attackVector": "NETWORK",
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
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],
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"timestamp": "2026-07-30T15:33:24.581319Z",
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CVE-2026-18003 (GCVE-0-2026-18003)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:27
VLAI
EPSS
VEX
Summary
Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
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"attackVector": "NETWORK",
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"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"version": "3.1"
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},
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CVE-2026-18002 (GCVE-0-2026-18002)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:24
VLAI
EPSS
VEX
Summary
Insufficient validation of untrusted input in Google Lens in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Insufficient validation of untrusted input
Assigner
References
Impacted products
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CVE-2026-18001 (GCVE-0-2026-18001)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 15:19
VLAI
EPSS
VEX
Summary
Inappropriate implementation in WebGL in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Low)
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Inappropriate implementation
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
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CVE-2026-18000 (GCVE-0-2026-18000)
Vulnerability from nvd – Published: 2026-07-30 00:26 – Updated: 2026-07-30 17:49
VLAI
EPSS
VEX
Summary
Insufficient policy enforcement in USB in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Insufficient policy enforcement
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
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CVE-2026-14541 (GCVE-0-2026-14541)
Vulnerability from cvelistv5 – Published: 2026-07-31 01:48 – Updated: 2026-07-31 16:14
VLAI
EPSS
VEX
Title
Authentication Bypass and Audience Confusion in MCP Toolbox OAuth Provider
Summary
An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google mcp-toolbox version 1.4.0. When a Google authService is initialized with mcpEnabled: true but lacks an explicitly defined audience or clientId, the ValidateMCPAuth pipeline for opaque tokens skips audience validation entirely. As a result, the toolbox will accept any valid Google OAuth access token—even those minted for unrelated ecosystem applications—granting unauthorized clients access to protected tools and data backends.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - (Improper Authentication)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
1.4.0
(semver)
|
Credits
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CVE-2026-14540 (GCVE-0-2026-14540)
Vulnerability from cvelistv5 – Published: 2026-07-31 01:46 – Updated: 2026-07-31 16:12
VLAI
EPSS
VEX
Title
Server-Side Request Forgery via Unrestricted HTTP Redirection in MCP Toolbox
Summary
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 and lacks target IP validation. An attacker or a malicious data-driven prompt can supply a crafted path parameter that triggers an open redirect or a direct destination swap on the target backend, coercing the mcp-toolbox into blindly following the redirection and making unauthorized requests to internal or arbitrary external endpoints.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-918 - (Server-Side Request Forgery (SSRF))
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
0.3.0 , ≤ 1.4.0
(semver)
|
Credits
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CVE-2026-14539 (GCVE-0-2026-14539)
Vulnerability from cvelistv5 – Published: 2026-07-31 01:45 – Updated: 2026-07-31 16:11
VLAI
EPSS
VEX
Title
Denial of Service via Unrestricted Payload Buffering in MCP Toolbox
Summary
An allocation of resources without limits vulnerability in the HTTP handler component of Google mcp-toolbox versions up to and including 1.4.0 allows an unauthenticated attacker to cause a denial of service (DoS). The /mcp endpoint handler reads incoming payloads directly into system memory using an unrestricted buffer loop (io.ReadAll) without applying defensive constraints such as http.MaxBytesReader or pre-read Content-Length enforcement. By submitting a single, massive HTTP request body, an attacker can linearly consume available host memory until the runtime process is terminated by an Out-Of-Memory (OOM) error.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-770 - (Allocation of Resources Without Limits or Throttling)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
0.0.0 , ≤ 1.4.0
(semver)
|
Credits
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CVE-2026-14538 (GCVE-0-2026-14538)
Vulnerability from cvelistv5 – Published: 2026-07-31 01:42 – Updated: 2026-07-31 16:09
VLAI
EPSS
VEX
Title
BigQuery Dataset Allowlist Bypass via Metadata Dry-Run in MCP Toolbox
Summary
An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-sql tool component of Google mcp-toolbox versions 0.16.1 through 1.4.0 allows an authenticated attacker to bypass allowedDatasets validation checks. The toolbox relies on the BigQuery dry-run API to enforce dataset restrictions, but due to a fail-open logic flaw, it bypasses validation when the API returns an empty array for specialized constructs. This allows the attacker to extract structural DDL schemas for explicitly excluded datasets via INFORMATION_SCHEMA, and access downstream federated row data via EXTERNAL_QUERY connections.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
0.16.1 , ≤ 1.4.0
(semver)
|
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CVE-2026-14537 (GCVE-0-2026-14537)
Vulnerability from cvelistv5 – Published: 2026-07-31 01:38 – Updated: 2026-07-31 16:08
VLAI
EPSS
VEX
Title
Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - (Incorrect Authorization)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mcp-toolbox |
Affected:
1.3.0
Affected: v1.4.0 |
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