CVE-2017-16651
HIGHCISA KEVEPSS 99th pctlDescription
Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the wild in November 2017. The attacker must be able to authenticate at the target system with a valid username/password as the attack requires an active session. The issue is related to file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 99% of all known CVEs.
Roundcube Webmail File Disclosure Vulnerability
Roundcube Webmail contains a file disclosure vulnerability caused by insufficient input validation in conjunction with file-based attachment plugins, which are used by default.
Apply updates per vendor instructions.
Remediation due: 2022-05-03
References
- http://packetstormsecurity.com/files/161226/Roundcube-Webmail-1.2-File-Disclosure.html
- http://www.securityfocus.com/bid/101793
- https://github.com/roundcube/roundcubemail/issues/6026
- https://github.com/roundcube/roundcubemail/releases/tag/1.1.10
- https://github.com/roundcube/roundcubemail/releases/tag/1.2.7
- https://github.com/roundcube/roundcubemail/releases/tag/1.3.3
- https://lists.debian.org/debian-lts-announce/2017/11/msg00039.html
- https://roundcube.net/news/2017/11/08/security-updates-1.3.3-1.2.7-and-1.1.10
- https://www.debian.org/security/2017/dsa-4030
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-16651
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-21.