Bug 2500059 (CVE-2026-54433) - CVE-2026-54433 roundcubemail: Roundcube Webmail: Arbitrary code execution via zero-click cross-site scripting
Summary: CVE-2026-54433 roundcubemail: Roundcube Webmail: Arbitrary code execution via...
Keywords:
Status: NEW
Alias: CVE-2026-54433
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2500062 2500063
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-14 17:03 UTC by OSIDB Bzimport
Modified: 2026-07-14 17:28 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-07-14 17:03:05 UTC 
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).
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