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High · 8.1 Public exploit CVE-2026-48842 EUVD-2026-31719GHSA-vc2v-cxrw-6g4p

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_r…

Published May 25, 2026 · Updated Sep 25, 2026 · Assigned by mitre

Vendor: Roundcube Product: Webmail Package: roundcube Package: roundcube Ecosystem: Debian Ecosystem: Ubuntu

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

VendorProductAffectedFixed
Roundcube Webmail 1.6.0 – < 1.6.16, 1.7.0 – < 1.7.1 1.6.16

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 roundcube 1.6.16+dfsg-1 —
Debian 13 roundcube 1.6.16+dfsg-0+deb13u1 —
Debian 12 roundcube 1.6.5+dfsg-1+deb12u9 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.10 roundcube No fix yet —
Ubuntu 25.10 roundcube No fix yet —
Show 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 26.04 LTS roundcube No fix yet —
Ubuntu Pro 24.04 LTS roundcube No fix yet —
Ubuntu Pro 22.04 LTS roundcube No fix yet —
Ubuntu Pro 20.04 LTS roundcube No fix yet —
Ubuntu Pro 18.04 LTS roundcube No fix yet —
Ubuntu Pro 16.04 LTS roundcube No fix yet —

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed roundcubemail 1.6.16-2.1 openSUSE-SU-2026:10869-1

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 3 repositories

  • 4minx/CVE-2026-48842 ★ 2 · Sep 27, 2026

    CVE-2026-48842 PoC — Roundcube virtuser_query pre-auth SQLi

  • XsanFlip/POC-CVE-2026-48842 ★ 1 · Oct 3, 2026

    CVE-2026-48842 Roundcube SQLi Verifier

  • murrez/CVE-2026-48842 ★ 1 · Sep 25, 2026

    Roundcube virtuser_query pre-auth SQLi (CVE-2026-48842). Python PoC — version detect, virtuser plugin, login probe. https://pocbit.org

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References