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AD LDAP App CVE-2026-76374

| EUVDEUVD-2026-62939 MEDIUM
Insertion of Sensitive Information into Log File (CWE-532)
2026-08-19 cisco GHSA-jrh7-gp79-87r9
4.3
CVSS 3.1 · Vendor: cisco
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate to Splunk SOAR with action-execution role
  2. Delivery
    Trigger AD LDAP app query action
  3. Exploit
    App writes AD response data to debug log
  4. Execution
    Access persistent log file on host or downstream pipeline
  5. Impact
    Extract sensitive Active Directory directory data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A09:2025 - Security Logging & Alerting Failures
ASVS 5.0
V16 - Security Logging and Error Handling Log data sanitization
Exploitation Conditions

Exploitation requires a valid Splunk SOAR account with a role that explicitly grants permission to run actions - this is a non-default, administratively assigned privilege, not available to all SOAR users. The AD LDAP App must be installed, configured, and connected to an Active Directory environment within the SOAR instance. The attacker must actively trigger write operations through the app (e.g., by executing a lookup or query action), which then causes AD response data to be logged. A secondary condition for data retrieval is access to the persistent debug log file, either directly on the SOAR host filesystem or via a downstream log pipeline. The CVSS PR:L metric confirms authentication is required; unauthenticated exploitation is not possible. Limiting factors include: requirement for an SOAR account with action-execution permissions (not all users), requirement for the AD LDAP app to be installed and in use, and requirement for access to log storage to retrieve the exposed data.

Impact

The CVSS 4.3 score with vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N accurately characterizes the exploitation profile: network-accessible, low complexity, requiring only a low-privileged authenticated SOAR account, with limited confidentiality impact and no integrity or availability consequences. No EPSS score was provided in the available intelligence data, so exploitation probability cannot be quantified numerically. The vulnerability is not listed in CISA KEV and no public exploit code has been identified, making opportunistic mass exploitation unlikely at this time. The real-world risk, however, should not be dismissed purely on the basis of the 4.3 score: Active Directory data - user attributes, group memberships, privileged account details - is exactly the reconnaissance material adversaries seek during post-compromise lateral movement. An organization relying on Splunk SOAR for security operations and AD integration should treat this as a moderate-priority remediation item, particularly given that log files may flow into downstream log management or SIEM systems where the exposure widens.

Exploit ScenarioDerived

An authenticated Splunk SOAR user with a role granting action-execution permissions triggers an AD LDAP app action - such as a user lookup or group membership query - as part of a playbook or manual action run. The app processes the LDAP response and writes the returned AD data to a persistent debug log file. The same user, or a separate actor who gains access to the log storage location, then reads the log to harvest Active Directory details such as privileged account names, group structures, or user attributes useful for lateral movement planning.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 19, 2026

Sensitive Active Directory response data exposure in the AD LDAP App for Splunk SOAR (versions below 2.3.8) allows authenticated users holding action-execution permissions to cause AD directory data to be written to a persistent debug log file. The flaw is rooted in CWE-532 (insertion of sensitive information into log files) and is reachable over the network by any low-privileged SOAR user with the appropriate role. No public exploit code or active exploitation has been identified; Splunk has released a patch at version 2.3.8.

RemediationAI

Upgrade the AD LDAP App for Splunk SOAR to version 2.3.8 or later, which resolves the debug log exposure per Splunk advisory SVD-2026-0806 (https://advisory.splunk.com/advisories/SVD-2026-0806). If immediate patching is not feasible, restrict the 'run actions' permission to only the minimum set of users who require it operationally, reducing the pool of accounts that can trigger the logging behavior - note this does not eliminate the flaw, only reduces exposure. Administrators should also audit existing debug log files on affected SOAR instances for sensitive AD data, restrict log file access to authorized administrators, and consider rotating any credentials or sensitive attributes that may have been captured. If logs are forwarded to a SIEM or log aggregation platform, review retention policies and access controls on those downstream systems as well.

Affected VersionsENISA

AD LDAP app for Splunk SOAR 2.3 <2.3.8

Affected Packages

euvd ad_ldap_app_for_splunk_soar fix: 2.3.8

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the Splunk AD LDAP App for Splunk SOAR (CPE: cpe:2.3:a:splunk:ad_ldap_app_for_splunk_soar:*:*:*:*:*:*:*:*), an integration layer that connects Splunk SOAR's automation and orchestration platform to Active Directory via LDAP. CWE-532 describes the root cause class: sensitive data returned in LDAP query responses - such as user attributes, group memberships, distinguished names, or other directory objects - is inadvertently persisted to a debug log file rather than being handled transiently in memory. Debug log files in SOAR platforms are typically written to persistent storage accessible to administrators and, depending on configuration, potentially to log aggregation pipelines or SIEM systems, broadening the exposure surface beyond the immediate query context.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (cisco) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 4.3 MEDIUM

Network vector as SOAR is accessed remotely; PR:L because an authenticated account with action-execution permission is required; C:L for partial AD data disclosure; no integrity or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (cisco).

CVSS VectorVendor: cisco

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Patch available
Aug 19, 2026 - 22:04 EUVD
CVE Published
Aug 19, 2026 - 21:34 nvd
MEDIUM 4.3

DescriptionCVE.org

In versions below 2.3.8 of the AD LDAP app for Splunk SOAR, a user who holds a role with permission to run actions could cause sensitive Active Directory response data to be written to a persistent debug log file by triggering write operations through the app. For more information see Run an action in Splunk SOAR (https://help.splunk.com/en/splunk-soar/soar-on-premises/use-splunk-soar-on-premises/8.6.0/use-the-command-line-interface-to-perform-tasks-in-splunk-soar-on-premises/run-an-action-in-splunk-soar-on-premises).

Threat Intelligence Overview

EPSS Score
0.2%
Top 88% exploitable
Prevalence
Medium
enterprise SOAR platform deployed in mid-to-large security operations centers
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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