CVE-2026-118426
Received Received - Intake

Authenticated LDAP User Search in Octopus Server

Publication date: 2026-10-29

Last updated on: 2026-10-29

Assigner: Octopus Deploy

Description
In affected versions of Octopus Server with the LDAP authentication provider enabled, any authenticated user could call the LDAP user search and LDAP group search.

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Meta Information

Published
2026-10-29
Last Modified
2026-10-29
Generated
2026-10-29
AI Q&A
2026-10-29
EPSS Evaluated
N/A
NVD
CVE-2026-118426
EUVD
EUVD-2026-112580

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
Octopus Deploy Octopus Server 3.0.0
Octopus Deploy Octopus Server 2026.3.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability affects Octopus Server with LDAP authentication enabled. It allows any authenticated user to perform LDAP user and group searches without proper authorization checks.

Detection Guidance

To detect this vulnerability, check if your Octopus Server version is prior to 2026.3.15909. Use the Octopus Server Manager or run the command: 'octopus.server version' to verify the installed version.

Impact Analysis

An attacker with valid credentials could enumerate users and groups in the LDAP directory, potentially revealing sensitive information about the organization's structure.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, potentially violating privacy requirements under GDPR or HIPAA if user information is exposed.

Mitigation Strategies

Immediately upgrade to Octopus Server version 2026.2.13487 or higher. The latest recommended version is 2026.3.15973. Octopus Cloud customers are already patched.

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