CVE-2026-48845

EUVD-2026-31720
In Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16 and 1.7.x before 1.7.1, remote image blocking was not honored for URLs pointing to local/private destinations, which may lead to information disclosure or privilege escalation via a text/html email message.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
mitreCNA
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 23%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
roundcubewebmail
1.6.14 ≤
𝑥
< 1.6.16
CNA
roundcubewebmail
1.7.0 ≤
𝑥
< 1.7.1
CNA
Debian logo
Debian Releases
Debian Product
Codename
roundcube
bookworm
vulnerable
bookworm (security)
1.6.5+dfsg-1+deb12u9
fixed
bullseye
vulnerable
bullseye (security)
1.4.15+dfsg.1-1+deb11u9
fixed
forky
1.6.17+dfsg-1
fixed
sid
1.6.17+dfsg-1
fixed
trixie
vulnerable
trixie (security)
1.6.16+dfsg-0+deb13u1
fixed
Common Weakness Enumeration
References
https://github.com/roundcube/roundcubemail/commit/7b52353653a67e6073b97d70eb94047132b78556
https://github.com/roundcube/roundcubemail/commit/d82b8c6cd06c378eca6d647ccd548f4ff1c68659
https://github.com/roundcube/roundcubemail/releases/tag/1.6.16
https://github.com/roundcube/roundcubemail/releases/tag/1.7.1
https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1