CVE-2026-5384: runZero Platform Auth Bypass Vulnerability

CVE-2026-5384 Overview

An incorrect authorization vulnerability has been identified in the runZero Platform that could allow a credential to be updated and used for a task from outside of the authorized organization scope. This vulnerability is classified as CWE-863 (Incorrect Authorization) and affects the credential management functionality within the platform's multi-tenant architecture.

The flaw enables an authenticated attacker with high privileges to potentially access or manipulate credentials across organizational boundaries, leading to unauthorized information disclosure. The attack requires network access and high complexity to exploit, but successful exploitation could have a significant impact on the confidentiality of data within affected runZero deployments.

Critical Impact

Authenticated attackers with elevated privileges could potentially access credentials belonging to other organizations within a shared runZero Platform deployment, enabling cross-tenant data exposure.

Affected Products

• runZero Platform versions prior to 4.0.26021.0

Discovery Timeline

• April 7, 2026 - CVE-2026-5384 published to NVD
• April 8, 2026 - Last updated in NVD database

Technical Details for CVE-2026-5384

Vulnerability Analysis

This vulnerability stems from an incorrect authorization implementation in the runZero Platform's credential management system. The flaw allows credentials to be updated and subsequently utilized for tasks beyond their intended organizational scope, effectively bypassing tenant isolation controls.

The attack vector requires network access with the attacker possessing high-level privileges within the platform. The scope of impact extends beyond the vulnerable component itself, as successful exploitation could affect credentials and tasks associated with other organizations within the same runZero deployment. While the attack complexity is high and requires specific conditions to be met, successful exploitation results in high confidentiality impact through unauthorized access to sensitive credential data.

Root Cause

The root cause of CVE-2026-5384 is an incorrect authorization check (CWE-863) in the credential update functionality. The platform fails to properly validate that a credential modification request originates from a user within the same organizational scope as the credential being modified. This authorization bypass allows cross-tenant credential manipulation, breaking the intended multi-tenant isolation model.

Attack Vector

The attack requires an authenticated user with high privileges to exploit the vulnerability over a network connection. The attacker must:

1. Obtain valid authentication credentials with elevated privileges on the runZero Platform
2. Identify a target credential belonging to a different organization
3. Craft a request to update the credential, bypassing organizational boundary checks
4. Utilize the modified credential for tasks that would normally be outside their authorized scope

This vulnerability does not require user interaction and operates at a changed scope level, meaning the impact extends beyond the vulnerable component to affect other organizational tenants. The technical complexity of exploitation is high, suggesting specific timing, configuration, or conditional factors must be met.

No verified code examples are available for this vulnerability. For detailed technical information, refer to the runZero Security Advisory.

Detection Methods for CVE-2026-5384

Indicators of Compromise

• Audit log entries showing credential modifications by users from different organizational contexts
• Tasks executed using credentials that were recently modified by users outside the credential's organization
• Unusual cross-organization API calls to credential management endpoints
• Authentication anomalies involving credential usage across tenant boundaries

Detection Strategies

• Monitor runZero Platform audit logs for credential update operations that cross organizational boundaries
• Implement alerting on credential modifications followed by immediate task executions
• Review access patterns for privileged accounts that interact with credentials across multiple organizations
• Correlate credential modification timestamps with subsequent task execution logs

Monitoring Recommendations

• Enable comprehensive audit logging for all credential management operations in runZero
• Configure alerts for any credential access or modification events involving cross-organizational contexts
• Regularly review privileged user activity within the platform for anomalous behavior patterns
• Implement session monitoring for users with high-privilege access to detect potential exploitation attempts

How to Mitigate CVE-2026-5384

Immediate Actions Required

• Upgrade the runZero Platform to version 4.0.26021.0 or later immediately
• Review audit logs for any historical evidence of cross-organizational credential manipulation
• Audit all credentials to ensure they have not been modified by unauthorized users
• Consider rotating credentials that may have been exposed prior to patching

Patch Information

runZero has addressed this vulnerability in version 4.0.26021.0 of the runZero Platform. Organizations should upgrade to this version or later to remediate the incorrect authorization flaw. Detailed release information is available in the runZero Release Notes.

The official security advisory with additional remediation guidance can be found at the runZero Security Advisory for CVE-2026-5384.

Workarounds

• Restrict network access to the runZero Platform management interfaces to trusted networks only
• Implement additional network segmentation to limit exposure of the platform's API endpoints
• Review and minimize the number of users with high-privilege access within the platform
• Enable enhanced logging and monitoring while awaiting patch deployment

# Verify runZero Platform version after upgrade
# Check that the installed version is 4.0.26021.0 or later
runzero --version
# Expected output should show version >= 4.0.26021.0