High 7.1Published Oct 20, 2026

CVE-2026-113386Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 are affected by IMAP command injection.

Updated under an hour ago (2026-10-21 06:30 UTC)

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It affects Roundcube Webmail. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.97%, higher than 61% of scored CVEs.

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Every CVE for Roundcube Webmail

Exploited in the last 30 days

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: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Weakness (CWE): CWE-93
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.97% (percentile 61)
Assigned by: mitre
NVD analysis: Awaiting Analysis
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

Roundcube Webmail roundcube:webmail (from the name)	from 1.6.0 before 1.6.20; from 1.7.0 before 1.7.5	CNA record

References

https://bugs.debian.org/1151279issue-tracking, third-party-advisory
https://github.com/roundcube/roundcubemail/commit/004adaaeca4f6799715a54d12e3f657f19efcc9apatch
https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5vendor-advisory, release-notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.5release-notes, patch
https://github.com/roundcube/roundcubemail/releases/tag/1.6.20release-notes, patch
https://github.com/roundcube/roundcubemail/commit/f62879defc0330ae240c72b83b2d00a8ab337447patch
https://github.com/roundcube/roundcubemail/commit/bf5bc0266a8cd16be6b640409e64a6c6c2705049patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.