CVE-2026-93450
go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion in Ordered JSON Marshal and Unmarshal
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-674 |
| Vendor | go-openapi |
| Product | swag |
| Published | Sep 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
go-openapi / swag
0 < 0.27.1
References
github.com: https://github.com/go-openapi/swag/security/advisories/GHSA-xh24-9qpg-8w28 github.com: https://github.com/go-openapi/swag/commit/0c24346ced59a25811e8694a915e7131d25ccb0e github.com: https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/adapter.go#L68 github.com: https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/ordered_map.go#L214 github.com: https://github.com/go-openapi/swag vulncheck.com: https://www.vulncheck.com/advisories/go-openapi-swag-jsonutils-before-0.27.1-uncontrolled-recursion-in-ordered-json-marshal-and-unmarshal
Credits
Wei Zhang, PayPal Cyber Security Team