CVE-2026-100347

Name	CVE-2026-100347
Description	kin-openapi is a Go project for handling OpenAPI files. Prior to 0.145.0, openapi3filter.ValidationHandler uses the routers/legacy router, which passes an unsupported or non-canonical HTTP method for an existing static path to openapi3.PathItem.GetOperation. The default branch of GetOperation panics before authentication runs, so an unauthenticated remote client can repeatedly send methods such as PROPFIND or lowercase get to abort connections and generate stack-trace log growth. The specific panic requires an exact static path; a concrete path matched only by a templated route does not reach the same sink. This issue is fixed in version 0.145.0.
Source	CVE (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 Package	Release	Version	Status
golang-github-getkin-kin-openapi (PTS)	bookworm	0.110.0-1	vulnerable
	trixie	0.124.0-1	vulnerable
	forky, sid	0.135.0-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-github-getkin-kin-openapi	source	(unstable)	(unfixed)

Notes

[trixie] - golang-github-getkin-kin-openapi <no-dsa> (Minor issue)
https://github.com/getkin/kin-openapi/security/advisories/GHSA-fh4f-47mf-f2gj
https://github.com/getkin/kin-openapi/commit/f1a5b523b82868d2d9be2e116b4e942892be72c3 (v0.145.0)