Cross-site request forgery in Roundcube Webmail - #VU156151
Published: October 19, 2026
Vulnerability identifier: #VU156151
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/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 cause a user to perform an unintended mark-as-junk operation.
The vulnerability exists due to insufficient cross-site request forgery validation in the mark-as-junk action when handling requests in a user's session. A remote attacker can induce a user to submit a crafted cross-site request to bypass validation and mark messages as junk without the user's intent.
Affected software
Roundcube Webmail
Remediation
Install security update from vendor's website.
Roundcube Webmail - addressed in versions 1.6.20, 1.7.5