Cross-site request forgery in Roundcube Webmail - #VU162695
Published: November 9, 2026
Vulnerability identifier: #VU162695
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to trigger unintended mail purge or expunge operations through another user's session.
The vulnerability exists due to insufficient cross-site request forgery validation in Roundcube Webmail's mail purge and expunge command handling when processing requests for these operations. A remote attacker can induce a signed-in user's browser to send a crafted cross-site request to perform unintended mail removal operations.
Affected software
Roundcube Webmail
Remediation
Install security update from vendor's website.
Roundcube Webmail - addressed in versions 1.6.21, 1.7.6