What’s Vulnerable › Vulnerabilities

CVE-2026-48842

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-25 · updated 2026-09-25
• Weakness: CWE-89

Description

Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1 has Pre-authentication SQL injection in the virtuser_query plugin via a preg_replace() backslash escape bypass.

Affected products

• Roundcube Webmail: from 1.6.0 before 1.6.16; from 1.7.0 before 1.7.1 — fixed in 1.6.16, 1.7.1

How to fix

Upgrade to a fixed version: Roundcube Webmail 1.6.16, 1.7.1. Check the vendor advisory for mitigations.

References

• https://github.com/roundcube/roundcubemail/commit/3406183a9976e36f992d3468f37d0e2346526ee9
• https://github.com/roundcube/roundcubemail/commit/87124cc7136a48b5fa9d2b40dfead6e9dcaeaf4b
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.16
• https://github.com/roundcube/roundcubemail/releases/tag/1.7.1
• https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1
• http://www.openwall.com/lists/oss-security/2026/06/03/17

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