CVE-2021-21335

—

CVSS 3.1

9.8 critical

EPSS

2%p75

Published

Mar 8, 2021 (Mar 8, 2021)

Modified

Jun 17, 2026

Description

In the SPNEGO HTTP Authentication Module for nginx (spnego-http-auth-nginx-module) before version 1.1.1 basic Authentication can be bypassed using a malformed username. This affects users of spnego-http-auth-nginx-module that have enabled basic authentication. This is fixed in version 1.1.1 of spnego-http-auth-nginx-module. As a workaround, one may disable basic authentication.

Vendors: spnego http authentication module project
Products: spnego http authentication module
Weakness: CWE-287
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.7%)

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