{"cve":"CVE-2020-26214","nvd":{"published":"2020-11-06T18:15:12.437","modified":"2026-06-17T03:07:50.250","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-287"],"references":["https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65","https://github.com/alerta/alerta/issues/1277","https://github.com/alerta/alerta/pull/1345","https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh","https://pypi.org/project/alerta-server/8.1.0/"],"products":["alerta_project:alerta"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-26214","score":0.65933,"percentile":0.99271,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5hmm-x8q8-w5jh","url":"https://osv.dev/vulnerability/GHSA-5hmm-x8q8-w5jh","summary":"LDAP authentication bypass with empty password","modified":"2026-07-08T06:00:09.101662806Z","packages":[{"ecosystem":"PyPI","name":"alerta-server","purl":"pkg:pypi/alerta-server","ranges":[">=8.0.0 <8.1.0"],"fixed":["8.1.0"]},{"ecosystem":"PyPI","name":"alerta-server","purl":"pkg:pypi/alerta-server","ranges":["<7.5.7"],"fixed":["7.5.7"]}]},{"id":"PYSEC-2020-159","url":"https://osv.dev/vulnerability/PYSEC-2020-159","summary":"","modified":"2023-11-08T04:03:14.621217Z","packages":[{"ecosystem":"PyPI","name":"alerta-server","purl":"pkg:pypi/alerta-server","ranges":["<7.5.7",">=8.0.0 <8.1.0"],"fixed":["7.5.7","8.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}