CVE-2020-26214

CRITICAL NUCLEI

Alerta < 7.5.7 and 8.0.0-8.1.0 - Authentication Bypass via Empty LDAP Password

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2020-26214 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

Description

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.

Nuclei Templates (1)

Alerta < 8.1.0 - Authentication Bypass
CRITICALby CasperGN,daffainfo

References (6)

Core 6
Core References
Third Party Advisory x_refsource_misc
https://github.com/alerta/alerta/issues/1277
Third Party Advisory x_refsource_misc
https://github.com/alerta/alerta/pull/1345
Third Party Advisory x_refsource_misc
https://pypi.org/project/alerta-server/8.1.0/
Third Party Advisory x_refsource_misc
https://tools.ietf.org/html/rfc4513#section-5.1.2

Scores

CVSS v3 9.1
EPSS 0.6593
EPSS Percentile 99.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-287
Status published
Products (2)
alerta_project/alerta < 7.5.7
pypi/alerta-server 8.0.0 - 8.1.0PyPI
Published Nov 06, 2020
Tracked Since Feb 18, 2026