CVE-2026-113386

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 3.1

7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

EPSS

1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-25)

CWE

CWE-93

Published

2026-10-20

Modified

2026-10-22

Record from

the NVD, synced 2026-10-23

References

• https://bugs.debian.org/1151279
• https://github.com/roundcube/roundcubemail/commit/004adaaeca4f6799715a54d12e3f657f19efcc9a
• https://github.com/roundcube/roundcubemail/commit/bf5bc0266a8cd16be6b640409e64a6c6c2705049
• https://github.com/roundcube/roundcubemail/commit/f62879defc0330ae240c72b83b2d00a8ab337447
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.20

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