CVE-2020-26214

In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.

• CWE-287

• https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65Patch, Third Party Advisory
• https://github.com/alerta/alerta/issues/1277Third Party Advisory
• https://github.com/alerta/alerta/pull/1345Third Party Advisory
• https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jhThird Party Advisory
• https://pypi.org/project/alerta-server/8.1.0/Third Party Advisory
• https://tools.ietf.org/html/rfc4513#section-5.1.2Third Party Advisory
• https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65Patch, Third Party Advisory
• https://github.com/alerta/alerta/issues/1277Third Party Advisory
• https://github.com/alerta/alerta/pull/1345Third Party Advisory
• https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jhThird Party Advisory
• https://pypi.org/project/alerta-server/8.1.0/Third Party Advisory
• https://tools.ietf.org/html/rfc4513#section-5.1.2Third Party Advisory

Published

Nov 6, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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