Threat Intelligence / CVE / CVE-2026-48842

CVE-2026-48842

CVSS 8.1 (HIGH) · EPSS 0.1% · Published 2026-05-25

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.

CVSS v3 vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-89

Threats tracking this CVE

Roundcube Webmail Pre-Auth SQL Injection in virtuser_query Plugin (CVE-2026-48842) — Patched in 1.6.16 / 1.7.1 Alongside 7 Other Vulnerabilities — HIGH

References

https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1
https://github.com/roundcube/roundcubemail/releases/tag/1.7.1
https://github.com/roundcube/roundcubemail/commit/3406183a9976e36f992d3468f37d0e2346526ee9
https://github.com/roundcube/roundcubemail/releases/tag/1.6.16
https://github.com/roundcube/roundcubemail/commit/87124cc7136a48b5fa9d2b40dfead6e9dcaeaf4b

Full detection coverage & IOCs for threats exploiting CVE-2026-48842 are available via the Threadlinqs MCP server (Purple tier). View plans →

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