CVE-2026-54433: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Roundcube Webmail
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).
CVE-2026-54433: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Roundcube Webmail
Description
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).
CVSS v3.1
Score 7.2high
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-15T13:29:12.505Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a56684768715ace43dcfe91
Added to database: 07/14/2026, 16:48:07 UTC
Last updated: 07/14/2026, 16:48:07 UTC
Views: 1
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