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.
Browse Authentication Bypass security risksQuick 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
Related security risks
More published guidance from the same primary category.
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.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.