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CVE-2026-113386

Quick assessment

Affected
Roundcube Webmail
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Roundcube Webmail 1.6.20 之前版本以及 1.7.x 系列中 1.7.5 之前的版本均受 IMAP 命令注入漏洞影响。远程已认证攻击者可通过在 和 操作的 参数中注入 CRLF 序列，利用该漏洞执行任意 IMAP 命令。

CVSS 7.1 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-113386

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Roundcube Webmail 1.6.0 ~ 1.6.20 -

II. Public POCs for CVE-2026-113386

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-113386

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Patches & Fixes for CVE-2026-113386 (3)

Vendor Advisories for CVE-2026-113386 (2)

Vendor Pages for CVE-2026-113386 (2)

IV. Related Vulnerabilities

Same product: Webmail
Same vendor: Roundcube
Same weakness: CWE-93

V. Comments for CVE-2026-113386

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