CVE-2026-48846

6.5 MEDIUM

Published: May 25, 2026 Modified: May 26, 2026

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/roundcube/roundcubemail/commit/59cca80908a61e662c5f81741449e9aeb91e8abe

Source: cve@mitre.org

https://github.com/roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad89e99e2150a

Source: cve@mitre.org

https://github.com/roundcube/roundcubemail/releases/tag/1.6.16

Source: cve@mitre.org

https://github.com/roundcube/roundcubemail/releases/tag/1.7.1

Source: cve@mitre.org

https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1

Source: cve@mitre.org

5 reference(s) from NVD

Quick Stats

CVSS v3 Score

6.5 / 10.0

EPSS (Exploit Probability)

0.3%

22th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-669

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