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.

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Fixes

Solution

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History

Mon, 17 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 17 Aug 2026 15:00:00 +0000

Type Values Removed Values Added
Title Remote Code Execution in Roundcube MarkAsJunk Plugin via Crafted Placeholder Values

Mon, 17 Aug 2026 13:00:00 +0000

Type Values Removed Values Added
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.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-78
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-17T14:34:26.557Z

Reserved: 2026-08-17T12:37:44.639Z

Link: CVE-2026-74997

cve-icon Vulnrichment

Updated: 2026-08-17T14:34:22.480Z

cve-icon NVD

Status : Received

Published: 2026-08-17T13:16:54.100

Modified: 2026-08-17T15:16:59.230

Link: CVE-2026-74997

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-17T15:15:03Z

Weaknesses