In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the modoboa driver of the password plugin could leak a Modoboa API authentication token to a user-controlled host via crafted session data. This issue only affects Roundcube instances using the password plugin with its modoboa driver.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Roundcube Webmail
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
|
1.6.0
|
1.6.18
|
|
Roundcube Webmail
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
|
1.7.0
|
1.7.3
|
References 5
https://github.com/roundcube/roundcubemail/commit/65b8ea9d8304b10f1d3bda5bcc82f…
cve@mitre.org
https://github.com/roundcube/roundcubemail/commit/b0e26d617e7bbe3051135285993bc…
cve@mitre.org
https://github.com/roundcube/roundcubemail/releases/tag/1.6.18
cve@mitre.org
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3
cve@mitre.org
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3
cve@mitre.org