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389 Directory Server CVE-2026-19404

| EUVDEUVD-2026-55158 MEDIUM
Missing Authorization (CWE-862)
2026-08-10 redhat GHSA-2crm-65qv-hx46
Authentication Bypass Red Hat Directory Server 11 Red Hat Directory Server 12 Red Hat Directory Server 13 Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Red Hat Suse
6.5
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
vuln.today AI
6.5 MEDIUM

Default anonymous access enables network unauthenticated exploitation; no confidentiality impact; integrity and availability limited to replication metadata disruption.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
6.5 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Aug 10, 2026 - 10:36 vuln.today
CVE Published
Aug 10, 2026 - 09:38 nvd
MEDIUM 6.5

DescriptionCVE.org

A flaw was found in 389 Directory Server. The CleanAllRUV and Abort CleanAllRUV replication-maintenance extended operations perform no authorization check, allowing an unauthenticated remote attacker to invoke them when nsslapd-allow-anonymous-access is enabled (the default), or any authenticated low-privilege user to invoke them otherwise. This allows removal of a replica ID from replication metadata, purging of changelog records, and interruption of administrator-initiated cleanup, which can leave replication inconsistent or unavailable.

AnalysisAI

Missing authorization on CleanAllRUV and Abort CleanAllRUV LDAP extended operations in 389 Directory Server (Red Hat Directory Server 11-13) allows unauthenticated remote attackers - when the default anonymous access setting is active - to manipulate replication metadata, purge changelog records, and abort administrator-initiated cleanup tasks. The affected operations are replication-maintenance primitives that bypass the authorization layer entirely (CWE-862), meaning no account or session is required under default configuration. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Connect to LDAP port without credentials
Delivery
Send CleanAllRUV ExtendedRequest PDU
Exploit
Bypass missing authorization check
Execution
Remove target replica ID from replication RUV metadata
Persist
Purge associated changelog records
Impact
Disrupt or halt administrator-initiated replication cleanup
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Vulnerability AssessmentAI

Exploitation Unauthenticated exploitation requires that nsslapd-allow-anonymous-access is set to on, which is the default configuration for 389 Directory Server - no special setup is needed beyond a standard installation. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 6.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L) accurately reflects a network-reachable, low-complexity flaw requiring no authentication under the default configuration. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker with network access to the LDAP port (389/tcp) on a server running the default configuration constructs and sends a single LDAP ExtendedRequest PDU bearing the CleanAllRUV or Abort CleanAllRUV OID, requiring no bind or credentials. The directory server processes the operation without any authorization check, removes the targeted replica ID from the RUV, and purges associated changelog records, breaking multi-master replication for that replica and forcing administrator intervention to restore consistent state. …
Remediation No specific patched version is identified in the available data - the Red Hat CVE page (https://access.redhat.com/security/cve/CVE-2026-19404) should be monitored for an errata advisory containing the exact fixed RPM version. … Detailed patch versions, workarounds, and compensating controls in full report.
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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Server 16.0 Affected
SUSE Linux Enterprise Server 16.1 Affected

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CVE-2026-19404 vulnerability details – vuln.today
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