PEAKUP PassGate LDAP Injection Vulnerability
Improper neutralization of special elements used in an LDAP query ('LDAP injection') vulnerability in PEAKUP Technology Inc. PassGate allows LDAP Injection. This issue affects PassGate: through 30042026.
Quick answer
PEAKUP Technology Inc. PassGate should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- PassGate through 30042026
Fixed versions
- Apply the latest vendor-supported patched release
How to fix it
PEAKUP PassGate through 30042026 is affected by LDAP injection. Apply the latest vendor-supported patched release and harden LDAP query construction. Prioritize deployments that connect to directory services with broad read or write privileges.
- Inventory PassGate deployments and identify versions through 30042026.
- Upgrade to the latest vendor-supported patched release.
- Review LDAP query construction and ensure user-controlled values are escaped or parameterized.
- Restrict PassGate service accounts to least-privilege directory permissions.
- Enable logging for authentication, LDAP search filters, and directory bind failures.
- Review logs for LDAP metacharacters or abnormal search filters in user input.
- Rotate directory service credentials if unauthorized LDAP access is suspected.
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Verify the fix
- Confirm PassGate is upgraded beyond the affected release.
- Validate LDAP injection payloads cannot alter query logic.
- Review authentication and directory logs for suspicious LDAP filters.
- Test normal SSO, login, and directory lookup workflows after remediation.
- Run a Fixnx scan and confirm PassGate management or login surfaces are not unexpectedly exposed.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-4256?
PEAKUP Technology Inc. PassGate versions listed as affected should be reviewed: PassGate through 30042026.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
Why can this risk appear in multiple categories?
A vulnerability can belong to more than one platform or ecosystem. Fixnx keeps one canonical risk page while also listing it in every relevant category.