CVE-2026-74997

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CVSS 3.1

8.8 high

EPSS

<1%p54

Published

Aug 17, 2026 (29d ago)

Modified

Sep 8, 2026

Description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmd_learn driver.

Vendors: roundcube
Products: webmail
Weakness: CWE-78
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.8%)

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