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6 vulnerabilities found for aws-api-mcp-server by AWS
CVE-2026-125271 (GCVE-0-2026-125271)
Vulnerability from nvd – Published: 2026-11-10 16:33 – Updated: 2026-11-10 16:35
VLAI
EPSS
VEX
Title
AWS API MCP Server Security Policy Bypass via Incorrect Operation Name Normalization
Summary
Incorrect normalization of operation names in the custom security policy enforcement in awslabs aws-api-mcp-server before 1.5.1 might allow an actor to execute AWS API operations across AWS services that the operator's security policy was configured to deny or require elicitation for, via calls to operations whose names contain consecutive capital letters.
To remediate this issue, users should upgrade to version 1.5.1.
Severity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://pypi.org/project/awslabs.aws-api-mcp-serv… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/awslabs/mcp/security/advisorie… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-api-mcp-server |
Affected:
0.2.13 , < 1.5.1
(custom)
cpe:2.3:a:aws:aws-api-mcp-server:*:*:*:*:*:*:*:* |
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CVE-2026-115413 (GCVE-0-2026-115413)
Vulnerability from nvd – Published: 2026-10-27 18:10 – Updated: 2026-11-04 20:20
VLAI
EPSS
VEX
Title
AWS API MCP Server OAuth Token Audience Validation Bypass
Summary
Missing token audience validation in the OAuth authentication mode of AWS API MCP Server before version 1.6.0 might allow local users to run AWS operations with the server's configured AWS credentials via an access token issued to another application by the same identity provider.
To remediate this issue, users should upgrade to version 1.6.0 and configure the expected token audience or client ID for the server.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 20:06 UTC
CWE
- CWE-346 - Origin validation error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://pypi.org/project/awslabs.aws-api-mcp-serv… | release-notespatch |
| https://github.com/awslabs/mcp/security/advisorie… | third-party-advisory |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-api-mcp-server |
Affected:
1.3.0 , < 1.6.0
(custom)
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CVE-2026-16584 (GCVE-0-2026-16584)
Vulnerability from nvd – Published: 2026-07-23 15:34 – Updated: 2026-07-23 18:16
VLAI
EPSS
VEX
Title
AWS API MCP Server Security Policy Bypass via Startup Failure
Summary
Improper handling of an initialization failure in AWS API MCP Server from 0.2.13 through 1.3.46 might allow an actor to bypass the user-configured security policy and execute AWS API operations that the policy was set to deny or gate. When initialization of the security policy enforcement data fails at server startup, the policy check is skipped for the lifetime of the process. IAM permissions on the configured credentials remain in effect and are unaffected.
To remediate this issue, users should upgrade to version 1.3.47.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 18:16 UTC
CWE
- CWE-455 - Non-exit on failed initialization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://pypi.org/project/awslabs.aws-api-mcp-serv… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/awslabs/mcp/security/advisorie… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-api-mcp-server |
Affected:
0.2.13 , < 1.3.47
(custom)
cpe:2.3:a:aws:aws-api-mcp-server:*:*:*:*:*:*:*:* |
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CVE-2026-125271 (GCVE-0-2026-125271)
Vulnerability from cvelistv5 – Published: 2026-11-10 16:33 – Updated: 2026-11-10 16:35
VLAI
EPSS
VEX
Title
AWS API MCP Server Security Policy Bypass via Incorrect Operation Name Normalization
Summary
Incorrect normalization of operation names in the custom security policy enforcement in awslabs aws-api-mcp-server before 1.5.1 might allow an actor to execute AWS API operations across AWS services that the operator's security policy was configured to deny or require elicitation for, via calls to operations whose names contain consecutive capital letters.
To remediate this issue, users should upgrade to version 1.5.1.
Severity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://pypi.org/project/awslabs.aws-api-mcp-serv… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/awslabs/mcp/security/advisorie… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-api-mcp-server |
Affected:
0.2.13 , < 1.5.1
(custom)
cpe:2.3:a:aws:aws-api-mcp-server:*:*:*:*:*:*:*:* |
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CVE-2026-115413 (GCVE-0-2026-115413)
Vulnerability from cvelistv5 – Published: 2026-10-27 18:10 – Updated: 2026-11-04 20:20
VLAI
EPSS
VEX
Title
AWS API MCP Server OAuth Token Audience Validation Bypass
Summary
Missing token audience validation in the OAuth authentication mode of AWS API MCP Server before version 1.6.0 might allow local users to run AWS operations with the server's configured AWS credentials via an access token issued to another application by the same identity provider.
To remediate this issue, users should upgrade to version 1.6.0 and configure the expected token audience or client ID for the server.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 20:06 UTC
CWE
- CWE-346 - Origin validation error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://pypi.org/project/awslabs.aws-api-mcp-serv… | release-notespatch |
| https://github.com/awslabs/mcp/security/advisorie… | third-party-advisory |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-api-mcp-server |
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CVE-2026-16584 (GCVE-0-2026-16584)
Vulnerability from cvelistv5 – Published: 2026-07-23 15:34 – Updated: 2026-07-23 18:16
VLAI
EPSS
VEX
Title
AWS API MCP Server Security Policy Bypass via Startup Failure
Summary
Improper handling of an initialization failure in AWS API MCP Server from 0.2.13 through 1.3.46 might allow an actor to bypass the user-configured security policy and execute AWS API operations that the policy was set to deny or gate. When initialization of the security policy enforcement data fails at server startup, the policy check is skipped for the lifetime of the process. IAM permissions on the configured credentials remain in effect and are unaffected.
To remediate this issue, users should upgrade to version 1.3.47.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 18:16 UTC
CWE
- CWE-455 - Non-exit on failed initialization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://pypi.org/project/awslabs.aws-api-mcp-serv… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/awslabs/mcp/security/advisorie… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-api-mcp-server |
Affected:
0.2.13 , < 1.3.47
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