CVE-2026-100349

Name	CVE-2026-100349
Description	kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The document passes validation, but every response validation for the affected operation dereferences the nil schema and panics even when the response does not contain the declared header. Applications that ingest an untrusted specification can expose this as remote availability impact, while applications using only trusted local specifications still crash when the affected operation is exercised. This issue is fixed in version 0.146.0.
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-74vm-87hj-r66f
https://github.com/getkin/kin-openapi/commit/f5441d67f855ed34d975b3b85665764644ab1459 (v0.146.0)