| Name | CVE-2026-48846 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4604-1, DSA-6301-1 |
| Debian Bugs | 1137507 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| roundcube (PTS) | bullseye | 1.4.15+dfsg.1-1+deb11u4 | vulnerable |
| bullseye (security) | 1.4.15+dfsg.1-1+deb11u9 | fixed | |
| bookworm | 1.6.5+dfsg-1+deb12u8 | vulnerable | |
| bookworm (security) | 1.6.5+dfsg-1+deb12u9 | fixed | |
| trixie | 1.6.15+dfsg-0+deb13u1 | vulnerable | |
| trixie (security) | 1.6.16+dfsg-0+deb13u1 | fixed | |
| forky, sid | 1.6.16+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| roundcube | source | bullseye | 1.4.15+dfsg.1-1+deb11u9 | DLA-4604-1 | ||
| roundcube | source | bookworm | 1.6.5+dfsg-1+deb12u9 | DSA-6301-1 | ||
| roundcube | source | trixie | 1.6.16+dfsg-0+deb13u1 | DSA-6301-1 | ||
| roundcube | source | (unstable) | 1.6.16+dfsg-1 | 1137507 |
https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1
https://github.com/roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad89e99e2150a