CVE catalog
CVE-2026-73501
kin-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 NoopAuthentic
- Severity
- Critical · CVSS 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.43% · Oct 25, 2026
kin-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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-github-getkin-kin-openapi | sid | 0.135.0-1 | vulnerable |
| Debian | golang-github-getkin-kin-openapi | forky | 0.135.0-1 | vulnerable |
| Debian | golang-github-getkin-kin-openapi | trixie | 0.124.0-1 | vulnerable |
| Debian | golang-github-getkin-kin-openapi | bookworm | 0.110.0-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-github-getkin-kin-openapi | source | sid | (unfixed) | not yet assigned | Not reported | [1144345] |
| Debian | golang-github-getkin-kin-openapi | source | forky | (unfixed) | not yet assigned | Not reported | [1144345] |
| Debian | golang-github-getkin-kin-openapi | source | trixie | (unfixed) | not yet assigned | Not reported | [1144345] |
| Debian | golang-github-getkin-kin-openapi | source | bookworm | (unfixed) | not yet assigned | Not reported | [1144345] |
Notes
[trixie] golang-github-getkin-kin-openapi: Minor issue [bookworm] golang-github-getkin-kin-openapi: Minor issue; out of LTS support
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-github-getkin-kin-openapi-dev]Affected
Source package: [golang-github-getkin-kin-openapi]
Details (2)
0.110.0-1· all · bookwormAffected
nvd · golang-github-getkin-kin-openapi · debian · bookworm; nvd · golang-github-getkin-kin-openapi · debian · 12
0.110.0-1· all · bookwormAffected
nvd · golang-github-getkin-kin-openapi · debian · bookworm; nvd · golang-github-getkin-kin-openapi · debian · 12
[Debian 13 (Trixie)]
- [golang-github-getkin-kin-openapi-dev]Affected
Source package: [golang-github-getkin-kin-openapi]
Details (2)
0.124.0-1· all · trixieAffected
nvd · golang-github-getkin-kin-openapi · debian · 13
0.124.0-1· all · trixieAffected
nvd · golang-github-getkin-kin-openapi · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11684-1.json]
- [https://github.com/getkin/kin-openapi/commit/f0407d53b0730280266f454b755010e7eeb985da]
- [https://github.com/getkin/kin-openapi/releases/tag/v0.144.0]
- [https://github.com/getkin/kin-openapi/security/advisories/GHSA-r277-6w6q-xmqw]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-73501]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-73501]
- [https://security-tracker.debian.org/tracker/CVE-2026-73501]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73501.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]