CVE-2026-113386: CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection') in Roundcube Webmail
Description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 are affected by IMAP command injection. A remote authenticated attacker can exploit this via CRLF sequences injected into the _uid parameter of the mail/headers and mail/viewsource actions to execute arbitrary IMAP commands.
CVSS v3.1
Score 7.1high
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
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-10-20T04:53:45.817Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad6f6392cdf04f656f90bda
Added to database: 10/20/2026, 05:03:53 UTC
Last updated: 10/20/2026, 05:03:53 UTC
Views: 1
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