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2 vulnerabilities found for aws-smithy-json by amazon
CVE-2026-18140 (GCVE-0-2026-18140)
Vulnerability from nvd – Published: 2026-07-30 18:34 – Updated: 2026-07-30 19:12
VLAI
EPSS
VEX
Title
Uncontrolled recursion in the aws-smithy-json unknown-key skip path allows unauthenticated remote denial of service in smithy-rs generated servers
Summary
Uncontrolled recursion in the unknown-key skip path of the aws-smithy-json runtime crate before 0.62.7, which the smithy-rs code generator invokes from every generated struct deserializer, might allow remote unauthenticated users to cause a denial of service (process abort via stack exhaustion) via a single small HTTP request containing deeply nested JSON to a smithy-rs generated server.
To remediate this issue, users should upgrade to aws-smithy-json 0.62.7 or later and rebuild.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 19:12 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://crates.io/crates/aws-smithy-json/0.62.7 | patch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/smithy-lang/smithy-rs/security… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-smithy-json |
Affected:
0.32.0 , ≤ 0.62.6
(custom)
cpe:2.3:a:aws:aws-smithy-json:*:*:*:*:*:*:*:* |
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CVE-2026-18140 (GCVE-0-2026-18140)
Vulnerability from cvelistv5 – Published: 2026-07-30 18:34 – Updated: 2026-07-30 19:12
VLAI
EPSS
VEX
Title
Uncontrolled recursion in the aws-smithy-json unknown-key skip path allows unauthenticated remote denial of service in smithy-rs generated servers
Summary
Uncontrolled recursion in the unknown-key skip path of the aws-smithy-json runtime crate before 0.62.7, which the smithy-rs code generator invokes from every generated struct deserializer, might allow remote unauthenticated users to cause a denial of service (process abort via stack exhaustion) via a single small HTTP request containing deeply nested JSON to a smithy-rs generated server.
To remediate this issue, users should upgrade to aws-smithy-json 0.62.7 or later and rebuild.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 19:12 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://crates.io/crates/aws-smithy-json/0.62.7 | patch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/smithy-lang/smithy-rs/security… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | aws-smithy-json |
Affected:
0.32.0 , ≤ 0.62.6
(custom)
cpe:2.3:a:aws:aws-smithy-json:*:*:*:*:*:*:*:* |
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