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389 Directory Server CVE-2026-11770

| EUVDEUVD-2026-51510 HIGH
LDAP Injection (CWE-90)
2026-07-31 redhat GHSA-r7mx-568f-jgg3
Information Disclosure LDAP Code Injection 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
7.5
CVSS 3.1 · Vendor: redhat
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Severity by source

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

Remote, no auth or interaction, low complexity; boolean-blind leak of sensitive config metadata yields C:H with no integrity or availability impact.

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

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

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

Lifecycle Timeline

2
Analysis Generated
Jul 31, 2026 - 09:52 vuln.today
CVE Published
Jul 31, 2026 - 09:18 cve.org
HIGH 7.5

DescriptionCVE.org

A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation. Because the handler performs the search against cn=config with elevated replication plugin privileges and returns a boolean match result, the attacker can extract sensitive server configuration metadata, including replication bind DNs and password storage scheme information.

AnalysisAI

Information disclosure in 389 Directory Server (upstream of Red Hat Directory Server 11-13, shipped across RHEL 6-10) lets an unauthenticated remote attacker inject LDAP search filters into the CleanAllRUV replication status-check extended operation. Because the handler evaluates attacker-controlled filters against cn=config using elevated replication-plugin privileges and leaks a boolean match result, attackers can blindly enumerate sensitive configuration metadata such as replication bind DNs and password storage scheme details. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Reach LDAP service over network
Delivery
Send CleanAllRUV status-check extended op
Exploit
Inject crafted filter into cn=config search
Execution
Observe boolean match oracle
Persist
Iterate to extract bind DNs and password scheme
Impact
Reuse metadata for credential attack
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the target expose the LDAP service and honor the CleanAllRUV replication status-check extended operation to unauthenticated clients - i.e., a 389 Directory Server or Red Hat Directory Server instance with the multi-master replication (replication plugin) subsystem present and network-reachable. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N scores 7.5 and is internally consistent with the description: fully remote, low complexity, no privileges or user interaction, pure confidentiality impact with no integrity or availability effect. … 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 service sends a series of crafted CleanAllRUV replication status-check extended operations, each embedding an injected LDAP filter fragment targeting cn=config. By observing whether each request returns a boolean match, the attacker infers replication bind DNs and the configured password storage scheme character by character, building an accurate picture of the directory's internal configuration for follow-on credential attacks. …
Remediation No vendor-released patch version is identified in the available data, so the primary action is to monitor and apply the Red Hat errata referenced at https://access.redhat.com/security/cve/CVE-2026-11770 and bug https://bugzilla.redhat.com/show_bug.cgi?id=2484802, then update the 389-ds-base and redhat-ds packages to the fixed version once published. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all Directory Server instances across RHEL 6-10 environments using network discovery tools and map which systems are network-exposed or accessible from untrusted subnets. …

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Vendor StatusVendor

SUSE

Severity: Important
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-2026-11770 vulnerability details – vuln.today
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