{"cve":"CVE-2020-26542","nvd":{"published":"2020-11-09T20:15:13.323","modified":"2026-06-17T03:08:10.080","status":"Modified","description":"An issue was discovered in the MongoDB Simple LDAP plugin through 2020-10-02 for Percona Server when using the SimpleLDAP authentication in conjunction with Microsoft’s Active Directory, Percona has discovered a flaw that would allow authentication to complete when passing a blank value for the account password, leading to access against the service integrated with which Active Directory is deployed at the level granted to the authenticating account.","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://jira.percona.com/browse/PS-7358","https://jira.percona.com/browse/PSMDB-726","https://www.percona.com/blog/2020/10/13/percona-distribution-for-mysql-pxc-variant-8-0-20-fixes-for-security-vulnerability-release-roundup-october-13-2020/","https://www.percona.com/doc/percona-distribution-mysql/8.0/release-notes-pxc-v8.0.20.upd2.html","https://jira.percona.com/browse/PS-7358"],"products":["percona:percona_server"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-26542","score":0.01538,"percentile":0.7489,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}