Debian dla-4604 : roundcube - security update

medium Nessus Plugin ID 317444

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4604 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4604-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin May 28, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : roundcube Version : 1.4.15+dfsg.1-1+deb11u9 CVE ID : CVE-2026-48842 CVE-2026-48843 CVE-2026-48844 CVE-2026-48845 CVE-2026-48846 CVE-2026-48847 CVE-2026-48848 CVE-2026-48849 Debian Bug : 1132838 1137507

Multiple vulnerabilities were discovered in Roundcube, a skinnable AJAX based webmail solution for IMAP servers, which could result in cross-site scripting, SQL injection, server-side request forgery, information disclosure, code injection, or deletion of arbitrary files.

CVE-2026-48842

Pre-authentication SQL injection in `virtuser_query` plugin via `preg_replace()` backslash escape bypass.

CVE-2026-48843

Server-Side Request Forgery (SSRF) vulnerability via stylesheet links to a specific local address URLs. This issues stems from an insufficient fix for CVE-2026-35540.

CVE-2026-48844

Code injection vulnerability via code evaluation support in LDAP's `autovalues` option. Code evaluation support has been removed in this update.

CVE-2026-48845

Local/private URL fetch bypass when remote resources were not allowed. This allows attackers to bypass remote image blocking to potentially bypass access control.

CVE-2026-48846

Bypass of remote image blocking via CSS `var()`. This allows attackers to bypass remote image blocking to track email open action or potentially bypass access control.

CVE-2026-48847

Pre-authentication arbitrary file delete via redis/memcache session poisoning bypass.

CVE-2026-48848

CSS injection bypass in HTML sanitizer via SVG `<animate attributeName=style>`.

CVE-2026-48849

Stored XSS/HTML/CSS injection in subject field of the draft restore dialog.

For Debian 11 bullseye, these problems have been fixed in version 1.4.15+dfsg.1-1+deb11u9.

We recommend that you upgrade your roundcube packages.

For the detailed security status of roundcube please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/roundcube

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the roundcube packages.

Plugin Details

Severity: Medium

ID: 317444

File Name: debian_DLA-4604.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 5/28/2026

Updated: 5/28/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-35540

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:roundcube-core, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:roundcube, p-cpe:/a:debian:debian_linux:roundcube-mysql, p-cpe:/a:debian:debian_linux:roundcube-plugins, p-cpe:/a:debian:debian_linux:roundcube-pgsql, p-cpe:/a:debian:debian_linux:roundcube-sqlite3

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/28/2026

Vulnerability Publication Date: 3/31/2026

Reference Information

CVE: CVE-2026-35540, CVE-2026-48842, CVE-2026-48843, CVE-2026-48844, CVE-2026-48845, CVE-2026-48846, CVE-2026-48847, CVE-2026-48848, CVE-2026-48849

IAVA: 2026-A-0301-S, 2026-A-0521

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