CVE-2026-75007
Received Received - Intake

LDAP Injection in Roundcube Webmail

Publication date: 2026-08-17

Last updated on: 2026-08-17

Assigner: MITRE

Description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the LDAP search filter was subject to injection via unescaped %u/%fu/%d substitution, which may lead to information disclosure or privilege escalation.

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Meta Information

Published
2026-08-17
Last Modified
2026-08-17
Generated
2026-08-17
AI Q&A
2026-08-17
EPSS Evaluated
N/A
NVD
CVE-2026-75007
EUVD
EUVD-2026-60172

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
roundcube roundcube to 1.6.18 (exc)
roundcube roundcube From 1.7.0 (inc) to 1.7.3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

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Executive Summary

This vulnerability is an LDAP injection flaw in Roundcube Webmail versions before 1.6.18 and 1.7.x before 1.7.3. It occurs due to improper escaping of certain substitution characters (%u, %fu, %d) in LDAP search filters, allowing attackers to manipulate queries.

Detection Guidance

To detect this vulnerability, check the Roundcube Webmail version installed on your system. Versions before 1.6.18 and 1.7.x before 1.7.3 are vulnerable. Run commands like 'grep -r "roundcube" /var/www/' or check package managers like 'dpkg -l | grep roundcube' on Debian-based systems.

Impact Analysis

The vulnerability may lead to information disclosure by exposing sensitive data through crafted LDAP queries. It could also enable privilege escalation if attackers gain unauthorized access to higher-level accounts or administrative functions.

Compliance Impact

This vulnerability could potentially lead to information disclosure or privilege escalation due to LDAP search filter injection. Such risks may impact compliance with standards like GDPR (data protection) or HIPAA (healthcare data privacy) by exposing sensitive user data or allowing unauthorized access.

Mitigation Strategies

Immediately update Roundcube Webmail to version 1.6.18 or later for the 1.6.x branch, or to version 1.7.3 or later for the 1.7.x branch. If updating is not possible, disable LDAP authentication temporarily or restrict access to the webmail interface until the update is applied.

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