Improper Protection of Alternate Path exists in the no-access and workdir feature of the AWS API MCP Server versions >= 0.2.14 and < 1.3.9 on all platforms may allow the bypass of intended file access restriction and expose arbitrary local file contents in the MCP client application context.
To remediate this issue, users should upgrade to version 1.3.9.
Metrics
Affected Vendors & Products
References
History
Tue, 17 Mar 2026 10:00:00 +0000
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Aws
Aws aws Api Mcp Server |
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| Vendors & Products |
Aws
Aws aws Api Mcp Server |
Mon, 16 Mar 2026 19:15:00 +0000
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ssvc
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Mon, 16 Mar 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Description | Improper Protection of Alternate Path exists in the no-access and workdir feature of the AWS API MCP Server versions >= 0.2.14 and < 1.3.9 on all platforms may allow the bypass of intended file access restriction and expose arbitrary local file contents in the MCP client application context. To remediate this issue, users should upgrade to version 1.3.9. | |
| Title | AWS API MCP File Access Restriction Bypass | |
| Weaknesses | CWE-424 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: AMZN
Published:
Updated: 2026-03-16T18:17:17.927Z
Reserved: 2026-03-16T14:28:58.998Z
Link: CVE-2026-4270
Updated: 2026-03-16T18:17:12.656Z
Status : Awaiting Analysis
Published: 2026-03-16T17:16:32.270
Modified: 2026-03-17T14:20:01.670
Link: CVE-2026-4270
No data.