CVE-2026-35542

Published Apr 3, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via a crafted background attribute of a BODY element in an e-mail message. This may lead to information disclosure or access-control bypass.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6196-1 roundcube security update
Github GHSA Github GHSA GHSA-5hf6-crg4-fg59 Roundcube: Bypass of remote image blocking via crafted BODY background attribute
History
Type Values Removed Values Added
Title Roundcube Webmail Remote Image Blocking Feature Bypass Allows Information Disclosure
Type Values Removed Values Added
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Roundcube Webmail Remote Image Blocking Feature Bypass Allows Information Disclosure
First Time appeared Roundcube
Roundcube webmail
Vendors & Products Roundcube
Roundcube webmail
Type Values Removed Values Added
Description An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via a crafted background attribute of a BODY element in an e-mail message. This may lead to information disclosure or access-control bypass.
Weaknesses CWE-669
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Apr 3, 2026, 12:51 PM
Reserved
Apr 3, 2026, 3:54 AM
Status
Analyzed
Published
Apr 3, 2026, 5:16 AM
Modified
Jul 24, 2026, 9:10 PM