Pre-authentication SQL Injection Vulnerability in Roundcube Webmail by Roundcube
CVE-2026-48842

8.1HIGH

Key Information:

Vendor

Roundcube

Status
Webmail
Vendor
CVE Published:
25 May 2026

What is CVE-2026-48842?

The Roundcube Webmail application versions 1.6.x prior to 1.6.16 and 1.7.x prior to 1.7.1 contain a pre-authentication SQL injection vulnerability in the virtuser_query plugin. This issue arises from a bypass of backslash escape sequences in the preg_replace() function, which may allow an attacker to execute arbitrary SQL commands. This vulnerability underscores the importance of keeping web applications updated to mitigate risks associated with SQL injection attacks, protecting user data and maintaining application integrity.

Affected Version(s)

Webmail 1.6.0 < 1.6.16

Webmail 1.7.0 < 1.7.1

References

https://roundcube.net/news/2026/05/24/security-updates-1....
https://github.com/roundcube/roundcubemail/releases/tag/1...
https://github.com/roundcube/roundcubemail/commit/3406183...

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.