CVE-2026-78359

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

CVE-2026-78359

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

UBUNTU-CVE-2026-78359

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

CVE-2026-78359 Duplicate Identity / Identity Shadowing across CustomerUser backends

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

EUVD-2026-97269

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

CVE-2026-78359 Duplicate Identity / Identity Shadowing across CustomerUser backends

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

CVE-2026-78359

OTRS versions 7.0.X , 8.0.X , 2023.X , 2024.X , 2025.X , and 2026.X before 2026.7.X , as well as Community Edition 6.x and before , are vulnerable to Identity Shadowing . The root cause is that OTRS fails to enforce unique customer user email addresses across multiple configured backends (e.g., a...

CVE-2026-78359: Use of Multiple Resources with Duplicate Identifier

OTRS does not sufficiently enforce the uniqueness of customer user identities across multiple configured CustomerUser backends. When multiple backends, such as a database and LDAP, are configured, the uniqueness check for customer user email addresses is performed only within the selected backend...

PT-2026-110491

Name of the Vulnerable Software and Affected Versions OTRS versions 6.x and earlier OTRS versions 7.0.x through 2026.6.x Description The software fails to properly enforce the uniqueness of customer user identities when multiple CustomerUser backends, such as a database and LDAP, are configured...