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,… (CVE-2026-75007)
Roundcube Webmail versions before 1.6.18 and 1.7.x before 1.7.3 contain a vulnerability in the LDAP search filter. This flaw allows injection via unescaped %u/%fu/%d substitutions, potentially leading to information disclosure or privilege escalation.
AI Analysis
Technical Summary
In Roundcube Webmail versions prior to 1.6.18 and 1.7.x prior to 1.7.3, the LDAP search filter is vulnerable to injection attacks due to improper escaping of %u/%fu/%d substitutions. This injection vulnerability (CWE-77) can be exploited to disclose sensitive information or escalate privileges within the affected system. The CVSS 3.1 base score is 8.8, indicating a high severity impact with network attack vector, low attack complexity, and requiring low privileges but no user interaction.
Potential Impact
Successful exploitation of this vulnerability may result in unauthorized information disclosure or privilege escalation in Roundcube Webmail installations running affected versions. This could compromise user data and system integrity.
Mitigation Recommendations
A fix is available in Roundcube Webmail versions 1.6.18 and 1.7.3 and later. Users should upgrade to these versions or later to remediate this vulnerability. Patch status is not explicitly confirmed by a vendor advisory in the provided data, so verify with the official Roundcube project for the latest remediation guidance.
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,… (CVE-2026-75007)
Description
Roundcube Webmail versions before 1.6.18 and 1.7.x before 1.7.3 contain a vulnerability in the LDAP search filter. This flaw allows injection via unescaped %u/%fu/%d substitutions, potentially leading to information disclosure or privilege escalation.
CVSS v3.1
Score 8.8high
Affected software
pkg:github/roundcube/roundcubemailRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In Roundcube Webmail versions prior to 1.6.18 and 1.7.x prior to 1.7.3, the LDAP search filter is vulnerable to injection attacks due to improper escaping of %u/%fu/%d substitutions. This injection vulnerability (CWE-77) can be exploited to disclose sensitive information or escalate privileges within the affected system. The CVSS 3.1 base score is 8.8, indicating a high severity impact with network attack vector, low attack complexity, and requiring low privileges but no user interaction.
Potential Impact
Successful exploitation of this vulnerability may result in unauthorized information disclosure or privilege escalation in Roundcube Webmail installations running affected versions. This could compromise user data and system integrity.
Mitigation Recommendations
A fix is available in Roundcube Webmail versions 1.6.18 and 1.7.3 and later. Users should upgrade to these versions or later to remediate this vulnerability. Patch status is not explicitly confirmed by a vendor advisory in the provided data, so verify with the official Roundcube project for the latest remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2c9p-fq48-6545
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-75007"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a833345bf8831d5392a3c81
Added to database: 08/17/2026, 16:13:57 UTC
Last enriched: 09/10/2026, 14:36:41 UTC
Last updated: 10/03/2026, 02:46:06 UTC
Views: 49
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