CVE-2026-73501

NameCVE-2026-73501
Descriptionkin-openapi is a Go project for handling OpenAPI files. Prior to 0.144.0, ValidationHandler.Load() in openapi3filter/validation_handler.go silently replaces a nil AuthenticationFunc with NoopAuthenticationFunc, which returns nil without checking credentials. This substitution causes every OpenAPI security requirement to be satisfied for unauthenticated requests when an application relies on ValidationHandler as its enforcement middleware. The no-op callback prevents the fail-closed ErrAuthenticationServiceMissing path from being reached and forwards the request to protected handlers that may require an API key, OAuth token, or another security scheme. This issue is fixed in version 0.144.0.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
golang-github-getkin-kin-openapi (PTS)bullseye0.32.0-2vulnerable
bookworm0.110.0-1vulnerable
trixie0.124.0-1vulnerable
forky, sid0.135.0-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
golang-github-getkin-kin-openapisource(unstable)(unfixed)

Notes

https://github.com/getkin/kin-openapi/security/advisories/GHSA-r277-6w6q-xmqw
Fixed by: https://github.com/getkin/kin-openapi/commit/f0407d53b0730280266f454b755010e7eeb985da (v0.144.0)

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