CVE-2026-48846CWE-669

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…

Medium · published May 25, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
40.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00478 · 40.3th percentile
Weakness
CWE-669 · Incorrect Resource Transfer Between Spheres
Published
2026-05-25T19:21Z
EPSS history
Timeline
  • 25 MAY 19:21Z
    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…
    cvelistv5