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 an LDAP search filter injection vulnerability due to unescaped %u/%fu/%d substitutions. This flaw may allow an attacker to cause information disclosure or privilege escalation by manipulating LDAP queries.
AI Analysis
Technical Summary
CVE-2026-75007 affects Roundcube Webmail prior to versions 1.6.18 and 1.7.3. The vulnerability arises from improper escaping of %u, %fu, and %d substitutions in LDAP search filters, leading to LDAP injection (CWE-77). This can be exploited to alter LDAP queries, potentially exposing sensitive information or escalating privileges within the application.
Potential Impact
Successful exploitation can lead to limited confidentiality and integrity impacts, such as unauthorized information disclosure or privilege escalation within the Roundcube Webmail environment. Availability is not affected. The CVSS score of 5.4 (medium severity) reflects these impacts.
Mitigation Recommendations
Patch to Roundcube Webmail version 1.6.18 or later, or 1.7.3 or later, where this LDAP injection vulnerability is fixed. Since no vendor advisory or patch links are provided, confirm patch availability from official Roundcube sources before applying updates. Until patched, avoid exposing vulnerable versions to untrusted users or networks.
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 an LDAP search filter injection vulnerability due to unescaped %u/%fu/%d substitutions. This flaw may allow an attacker to cause information disclosure or privilege escalation by manipulating LDAP queries.
CVSS v3.1
Score 5.4medium
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
CVE-2026-75007 affects Roundcube Webmail prior to versions 1.6.18 and 1.7.3. The vulnerability arises from improper escaping of %u, %fu, and %d substitutions in LDAP search filters, leading to LDAP injection (CWE-77). This can be exploited to alter LDAP queries, potentially exposing sensitive information or escalating privileges within the application.
Potential Impact
Successful exploitation can lead to limited confidentiality and integrity impacts, such as unauthorized information disclosure or privilege escalation within the Roundcube Webmail environment. Availability is not affected. The CVSS score of 5.4 (medium severity) reflects these impacts.
Mitigation Recommendations
Patch to Roundcube Webmail version 1.6.18 or later, or 1.7.3 or later, where this LDAP injection vulnerability is fixed. Since no vendor advisory or patch links are provided, confirm patch availability from official Roundcube sources before applying updates. Until patched, avoid exposing vulnerable versions to untrusted users or networks.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2c9p-fq48-6545
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-75007"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a833345bf8831d5392a3c81
Added to database: 08/17/2026, 16:13:57 UTC
Last enriched: 08/17/2026, 16:17:33 UTC
Last updated: 08/18/2026, 02:41:00 UTC
Views: 6
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