CVE-2026-51926

High

Description

An issue in docuForm GmbH FSM Client v.11.11c allows a remote attacker to obtain sensitive information via the login.php component. A vulnerability was identified in the authentication mechanism that allows user enumeration through the login interface. An attacker can differentiate between valid and invalid usernames based on variations in server responses. This information can be leveraged to identify existing accounts and facilitate further attacks, including brute-force or credential stuffing.

SeverityHigh
CVSS7.5
Exploit probability—
ProductFSM Client
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-203CWE-203

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
docuForm GmbH FSM Client11.11c—

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CVE-2026-51926 · FSM Client · Dark Radar