MEDIUMCVSS v3.1 6.8Vulnerability

CVE-2026-126813

Roundcube Webmail before 1.6.21 and 1.7.x before 1.7.6 contains an IMAP command injection vulnerability that allows attackers to inject commands via CRLF in the _uid parameter when messages_cache is enabled. Attackers can lure logged-in victims into opening crafted GET links to mail/show or mail/get, executing IMAP commands that delete messages, change flags, or grant mailbox access via SETACL.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-11T23:49:45.533241+00:00
Cvss score
6.8
Cvss severity
MEDIUM
Retrieved at
2026-11-11T23:50:18+00:00
Score
6.8
Last source
NVD
Cvss version
3.1
Cve id
CVE-2026-126813
Cvss vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
First seen by Signal
2026-11-11T23:46:41+00:00
Name
CVE-2026-126813
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Published at
2026-11-11T21:16:45.883
Last modified
2026-11-11T21:16:45.883

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CVE-2026-126813 (CVSS v3.1 6.8) — Ninja Signal Threat Intelligence | Ninja Signal