---
id: CVE-2026-48842
title: >-
  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.
summary: >-
  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.
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-89
vendor: Roundcube
product: Webmail
affected:
  - Webmail >= 1.6.0 < 1.6.16
  - Webmail >= 1.7.0 < 1.7.1
published: '2026-05-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T04:17:35.357'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48842'
references:
  - url: >-
      https://github.com/roundcube/roundcubemail/commit/3406183a9976e36f992d3468f37d0e2346526ee9
    label: cve@mitre.org
  - url: >-
      https://github.com/roundcube/roundcubemail/commit/87124cc7136a48b5fa9d2b40dfead6e9dcaeaf4b
    label: cve@mitre.org
  - url: 'https://github.com/roundcube/roundcubemail/releases/tag/1.6.16'
    label: cve@mitre.org
  - url: 'https://github.com/roundcube/roundcubemail/releases/tag/1.7.1'
    label: cve@mitre.org
  - url: 'https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1'
    label: cve@mitre.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/06/03/17'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-24T00:00:00+00:00'
epss: 0.00888
epssPercentile: 0.57555
ingestedAt: '2026-09-25T03:58:52.652Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.