CVE-2026-74997

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74997
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 13:16:54 UTC
Updated2026-08-17 15:16:59 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

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

Problem Types: CWE-78 | CWE-78 CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Roundcube Webmail affected 1.6.0 1.6.18 semver Not specified
CNA Roundcube Webmail affected 1.7.0 1.7.3 semver Not specified

References

ReferenceSourceLinkTags
github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c5... [email protected] github.com
roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 [email protected] roundcube.net
github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d... [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.6.18 [email protected] github.com
github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f... [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.7.3 [email protected] github.com
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