CVE-2026-93450— go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion in Ordered JSON Marshal and Unmarshal
Quick assessment
Affected
go-openapi swag
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
go-openapi/swag 的 jsonutils 组件在 0.27.1 之前版本中存在堆栈溢出漏洞，该漏洞源于在解析和序列化有序 JSON 时存在无深度限制的无限递归。远程未认证的攻击者可以通过向接受 OpenAPI 规范的 API 提交深度嵌套的 JSON 文档，触发致命的堆栈溢出，从而导致进程终止，并使所有正在处理中的请求失败。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| go-openapi | swag | < 0.27.1 |
affected |
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I. Basic Information for CVE-2026-93450
Vulnerability Information
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Vulnerability Title
go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion in Ordered JSON Marshal and Unmarshal
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| go-openapi | swag | 0 ~ 0.27.1 | - |
|
II. Public POCs for CVE-2026-93450
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-93450 (5)
-
swag/jsonutils/adapters/stdlib/json/ordered_map.go at v0.27.0 · go-openapi/swag · GitHub technical-description
-
swag/jsonutils/adapters/stdlib/json/adapter.go at v0.27.0 · go-openapi/swag · GitHub technical-description
IV. Related Vulnerabilities
Same weakness: CWE-674
-
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braces through 3.0.3 Stack Overflow via Deeply Nested Patter -
CVE-2026-93435
redis-parser through 3.0.0 Denial of Service via Unbounded R -
CVE-2026-52852
Traccar: Uncontrolled Infinite Loop DoS via Group Parent Cyc
V. Comments for CVE-2026-93450
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