Stored XSS Vulnerability in Roundcube Webmail from Iput Global Technologies
CVE-2026-74999

5.4MEDIUM

Key Information:

Vendor

Roundcube

Status
Webmail
Vendor
CVE Published:
17 August 2026

What is CVE-2026-74999?

A security vulnerability exists in Roundcube Webmail that allows stored Cross-Site Scripting (XSS) attacks. This issue is triggered when users perform the 'Add to address book' action. Malicious scripts can be executed within a user's browser, potentially leading to unauthorized actions or data breaches. The vulnerability affects versions prior to 1.6.18 and 1.7.x before 1.7.3. Users are advised to update to the latest versions to mitigate the risk.

Affected Version(s)

Webmail 1.6.0 < 1.6.18

Webmail 1.7.0 < 1.7.3

References

https://roundcube.net/news/2026/08/09/security-updates-1....
https://github.com/roundcube/roundcubemail/releases/tag/1...
https://github.com/roundcube/roundcubemail/commit/32f20c6...

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.