CVE-2026-93450

go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion in Ordered JSON Marshal and Unmarshal

CVE-2026-93450 is fixed in runfinch-finch on 1 platform by ALAS2023-2026-3395 (version 1.19.0-1.amzn2023.0.4), released November 10, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0110
65th percentile

go-openapi/swag jsonutils before 0.27.1 contains a stack overflow vulnerability in ordered JSON parsing and serialization due to unbounded recursion with no depth limit. Remote unauthenticated attackers can submit deeply nested JSON documents to services accepting OpenAPI specifications, causing fatal stack overflow that terminates the process and all in-flight requests.

Where it's fixed

ProductFixed inFixReleased
Linux
runfinch-finch · amzn 2023 1.19.0-1.amzn2023.0.4 ALAS2023-2026-3395 Nov 10, 2026

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