CVE-2026-114714: CWE-23 Relative Path Traversal in Roundcube Webmail
Description
CVE-2026-114714 is a path traversal vulnerability in the squirrelmail_usercopy plugin of Roundcube Webmail. Versions before 1.6.20 and 1.7.x before 1.7.5 are affected. The vulnerability arises because the source path for file import is constructed from the login name without filtering out path separators, allowing an attacker to read files outside the intended directory. The issue was fixed by rejecting login names containing slashes.
CVSS v3.1
Score 5.3medium
Affected software
Roundcube
Webmail
pkg:github/WebmailRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Roundcube Webmail versions >=1.6.0 <1.6.20 and >=1.7.0 <1.7.5 contain a CWE-23 relative path traversal vulnerability in the squirrelmail_usercopy plugin. The vulnerability occurs when the file-based backend constructs the source path from the login name without sanitizing path separators. This allows a specially crafted login name containing slashes to cause files outside the configured squirrelmail_data_dir to be read and imported. The upstream fix rejects login names containing slashes, mitigating the vulnerability.
Potential Impact
An attacker with the ability to specify a login name can exploit this vulnerability to read files outside the intended data directory, potentially exposing sensitive information. The CVSS score of 5.3 reflects a medium severity with high confidentiality impact but no integrity or availability impact. Exploitation requires low privileges and no user interaction but has a high attack complexity.
Mitigation Recommendations
Upgrade Roundcube Webmail to version 1.6.20 or later, or 1.7.5 or later, where the vulnerability is fixed by rejecting login names containing slashes. No other mitigations are indicated. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-10-22T01:08:34.177Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad964714d27ba8daa17d63a
Added to database: 10/22/2026, 01:18:41 UTC
Last enriched: 10/22/2026, 01:30:22 UTC
Last updated: 10/22/2026, 01:33:46 UTC
Views: 5
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