CVE-2026-4256 LDAP Injection in PEAKUP's PassGate

High 8.2 Published 9 Jul 2026 Updated 9 Jul 2026

Attackers can inject LDAP queries into PassGate to bypass authentication or read directory data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-4256?

CVE-2026-4256 is a high-severity vulnerability in PEAKUP Technology Inc. PassGate, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-90

Which versions are affected by CVE-2026-4256?

How do I fix CVE-2026-4256?

No fix has been published for CVE-2026-4256 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-4256 being exploited?

There is no known exploitation of CVE-2026-4256 in the wild and no public exploit code.

Sources

Also known as GHSA-pxcq-c9px-mh7p.