CVE-2026-110256 Dockhand before 1.0.19 Username Enumeration via LDAP Injection in tryLdapAuth
Unauthenticated attackers can enumerate valid LDAP usernames via timing attacks in Dockhand, exposing user identities.
- 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-2026-110256?
CVE-2026-110256 is a medium-severity vulnerability in Finsys dockhand, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Finsys Dockhand through 1.0.18 contains an LDAP injection vulnerability in the tryLdapAuth function in src/lib/server/auth.ts, which inserts the login username into the LDAP search filter without escaping wildcard characters. Unauthenticated attackers can submit incremental wildcard patterns such as 'a*' to /api/auth/login and measure response timing to enumerate valid LDAP usernames while evading per-username rate limiting.
Weakness: CWE-90
Which versions are affected by CVE-2026-110256?
How do I fix CVE-2026-110256?
No fix has been published for CVE-2026-110256 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-110256 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110256 exists.
Sources
Also known as GHSA-vmm5-cjvh-7vmv, GHSA-vxrf-jvm9-v7fw.