PT-2026-43109 · Roundcube · Webmail

Published 2026-05-25 · Updated 2026-05-25 · CVE-2026-48846

Mitre

CVSS v3.1

6.5

Medium

Base vector

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

In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, the remote image blocking feature can be bypassed via a crafted CSS var() value in an e-mail message, which may lead to information disclosure or access-control bypass.

Fix

Weakness Enumeration

CWE-669

Related Identifiers

CVE-2026-48846

Affected Products

Webmail

References · 5

• https://github.com/roundcube/roundcubemail/commit/59cca80908a61e662c5f81741449e9aeb91e8abe · Note
• https://github.com/roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad89e99e2150a · Note
• https://github.com/roundcube/roundcubemail/releases/tag/1.7.1 · Note
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.16 · Note
• https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1 · Note