What’s Vulnerable › Vulnerabilities

CVE-2017-16651: Roundcube Webmail File Disclosure Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 45.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-11-09 · updated 2026-06-17
• Weakness: CWE-552

Description

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.

Affected products

• Debian Linux: 7.0, 9.0
• Roundcube Webmail: through 1.1.9; 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5 (+4)

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
• 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

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