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    CVE-2026-76560

    A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated identity. This can allow an anonymous LDAP client to perform an operation, such as adding or modifying a directory entry, that a SELFDN-based ACI intended to restrict to a specific authenticated user.

    Published:Sep 7, 2026
    Last Modified:Sep 8, 2026
    EPS:Sep 7, 2026
    EPSS Score:0.00367
    CVSS Score:7.5

    Affected Products

    Vendor
    Redhat
    Product
    Directory Server
    Vendor
    Redhat
    Product
    Directory Server E4s
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Eus Long Life
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-18922 (CVSS 9.8) — A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyru…
    CVE-2026-19843 (CVSS 8.4) — A flaw was found in 389-ds-base. The Cockpit 389 Console's LDAP editor constructs an ldapsearch command by emb…
    CVE-2026-18453 (CVSS 7.5) — A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of op_sha…
    CVE-2026-18355 (CVSS 7.5) — A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_…
    CVE-2026-78701 (CVSS 6.5) — A flaw was found in 389-ds-base. A remote, authenticated attacker could exploit a vulnerability in the Simple …
    CVE-2026-18663 (CVSS 5.9) — A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function frees the parsed controls array o…
    CVE-2026-19404 (CVSS 6.5) — A flaw was found in 389 Directory Server. The CleanAllRUV and Abort CleanAllRUV replication-maintenance extend…
    CVE-2026-18651 (CVSS 5.4) — A flaw was found in 389 Directory Server. During SASL PLAIN authentication, the server installs connection-lev…
    CVE-2026-11770 (CVSS 7.5) — A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters in…
    CVE-2026-15722 (CVSS 7.5) — A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval()…

    References

    https://access.redhat.com/errata/RHSA-2026:64771
    https://access.redhat.com/errata/RHSA-2026:64776
    https://access.redhat.com/errata/RHSA-2026:64778
    https://access.redhat.com/errata/RHSA-2026:64779
    https://access.redhat.com/errata/RHSA-2026:64780
    https://access.redhat.com/errata/RHSA-2026:64781
    https://access.redhat.com/errata/RHSA-2026:64783
    https://access.redhat.com/errata/RHSA-2026:64784
    https://access.redhat.com/errata/RHSA-2026:64785
    https://access.redhat.com/errata/RHSA-2026:64789
    https://access.redhat.com/errata/RHSA-2026:64790
    https://access.redhat.com/errata/RHSA-2026:64791
    https://access.redhat.com/errata/RHSA-2026:64792
    https://access.redhat.com/errata/RHSA-2026:64793
    https://access.redhat.com/errata/RHSA-2026:64804
    https://access.redhat.com/errata/RHSA-2026:65119
    https://access.redhat.com/security/cve/CVE-2026-76560
    https://bugzilla.redhat.com/show_bug.cgi?id=2519521

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High