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2 vulnerabilities found for aws-sdk-rust by AWS
CVE-2026-15957 (GCVE-0-2026-15957)
Vulnerability from nvd – Published: 2026-07-21 19:33 – Updated: 2026-07-22 18:25
VLAI
EPSS
VEX
Title
Uncontrolled recursion in smithy-rs generated JSON, CBOR, and XML deserializers allows unauthenticated remote denial of service via recursive shapes
Summary
Smithy-RS is a Rust code generation and runtime framework that generates HTTP clients and servers from Smithy interface definitions, powering the AWS SDK for Rust and custom service implementations.
Uncontrolled recursion in the JSON, CBOR, and XML deserializer functions emitted by Amazon smithy-rs code generation could allow remote attackers to cause a denial of service (process abort via stack exhaustion) via a small request containing deeply nested data for a recursive model shape to a generated SDK or server.
To mitigate this issue, users should upgrade to aws-sdk-rust release-2026-06-02 or later. Users building custom servers with smithy-rs codegen should regenerate from smithy-rs release-2026-06-01 or later.
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
3 references
| URL | Tags |
|---|---|
| https://github.com/awslabs/aws-sdk-rust/releases/… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/smithy-lang/smithy-rs/security… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-sdk-rust |
Affected:
0 , < release-2026-06-02
(custom)
|
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CVE-2026-15957 (GCVE-0-2026-15957)
Vulnerability from cvelistv5 – Published: 2026-07-21 19:33 – Updated: 2026-07-22 18:25
VLAI
EPSS
VEX
Title
Uncontrolled recursion in smithy-rs generated JSON, CBOR, and XML deserializers allows unauthenticated remote denial of service via recursive shapes
Summary
Smithy-RS is a Rust code generation and runtime framework that generates HTTP clients and servers from Smithy interface definitions, powering the AWS SDK for Rust and custom service implementations.
Uncontrolled recursion in the JSON, CBOR, and XML deserializer functions emitted by Amazon smithy-rs code generation could allow remote attackers to cause a denial of service (process abort via stack exhaustion) via a small request containing deeply nested data for a recursive model shape to a generated SDK or server.
To mitigate this issue, users should upgrade to aws-sdk-rust release-2026-06-02 or later. Users building custom servers with smithy-rs codegen should regenerate from smithy-rs release-2026-06-01 or later.
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
3 references
| URL | Tags |
|---|---|
| https://github.com/awslabs/aws-sdk-rust/releases/… | release-notespatch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/smithy-lang/smithy-rs/security… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-sdk-rust |
Affected:
0 , < release-2026-06-02
(custom)
|
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