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CVE-2026-93450

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

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-93450

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93450

Published

swag

https://proxy.golang.org

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "go-openapi",
                    "product": "swag",
                    "collectionURL": "https://proxy.golang.org",
                    "repo": "https://github.com/go-openapi/swag",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/go-openapi/swag/jsonutils",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "0.27.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON