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CVE-2026-76560 is an authorization bypass in 389 Directory Server's SELFDN access-control-instruction (ACI) bind-rule evaluator. The evaluator compares the LDAP client's bind distinguished name with an entry's stored ownership attribute as text without ensuring that the client is authenticated. An anonymous LDAP bind has an empty bind DN, which incorrectly satisfies a SELFDN ownership check when the relevant stored value is also empty. An anonymous client can therefore satisfy an ACI intended to restrict an operation to the authenticated owner of a directory entry.
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No public exploit code observed for this vulnerability.
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A 389 Directory Server access-control-engine flaw in owner-based rules that permits an anonymous client with an empty identity to pass a check against an empty stored owner value. It is exploitable in the FreeIPA chain because FreeIPA's default ACI uses this rule shape.
An access-control bypass in 389 Directory Server where an anonymous LDAP client can bypass SELFDN ACI bind-rule checks by using an empty bind distinguished name.
An authorization-bypass vulnerability in 389 Directory Server allowing an anonymous LDAP client using an empty bind DN to bypass SELFDN ACI bind-rule checks.
An authorization-bypass vulnerability in 389-ds-base/389 Directory Server that allows an anonymous LDAP client using an empty bind DN to bypass SELFDN ACI bind-rule checks.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.