Auth bypass in Getkin Kin-openapi
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 NoopAuthenticationFunc, which returns nil without ch…
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Getkin Kin-openapi — versions < 0.144.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-73501?
- CVE-2026-73501 is a critical-severity vulnerability in Getkin Kin-openapi, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-08-12.
- How severe is CVE-2026-73501?
- Critical severity. CVSS v3 base score is 9.1 out of 10.