Vulnerability Details CVE-2026-18651
A flaw was found in 389 Directory Server. During SASL PLAIN authentication, the server installs connection-level bind credentials before performing the account-lock check. If the account is subsequently found to be locked, the bind is reported as failed to the client, but the already-installed authenticated state on the connection is not reverted. A client that supplies valid credentials for an account that has been administratively locked can continue to use the same connection with that account's privileges, defeating account lock as an access-revocation control.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 7.0%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-18651
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cpe:2.3:a:redhat:directory_server:11.0
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cpe:2.3:a:redhat:directory_server:12.0
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cpe:2.3:a:redhat:directory_server:13.0
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cpe:2.3:o:redhat:389_directory_server:-
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cpe:2.3:o:redhat:enterprise_linux:10.0
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:9.0