CVE-2026-48846 json
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()…
published 2026-05-25 5 mo ago modified 2026-07-24 3 mo ago also EUVD-2026-31725
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Roundcube Webmail 1.6.16, 1.7.1
- roundcube Debian 12 1.6.5+dfsg-1+deb12u9
- roundcube Debian 13 1.6.16+dfsg-0+deb13u1
- roundcube Debian 14 1.6.16+dfsg-1
debian advisories DEBIAN-CVE-2026-48846
- roundcubemail openSUSE Tumbleweed 1.6.16-2.1
opensuse advisories openSUSE-SU-2026:10869-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-48846 updated cvss 6.5
roundcubemail: remote image blocking feature can be bypassed via a crafted CSS var() value in an e-mail message
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Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected products
- Roundcube Webmail
Classification
- Weakness
-
- CWE-669 Incorrect Resource Transfer Between Spheres
References
- github.com /roundcube/roundcubemail/commit/59cca80908a61e662c5f81741449e9aeb91e8abe
- github.com /roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad89e99e2150a
- roundcube.net /news/2026/05/24/security-updates-1.6.16-and-1.7.1
- github.com /roundcube/roundcubemail/releases/tag/1.7.1
- github.com /roundcube/roundcubemail/releases/tag/1.6.16
Sources
- CVE List CVE-2026-48846
- NVD CVE-2026-48846
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.