CVE-2026-48845

Local Image Blocking Bypass Leading to Information Disclosure and Potential Privilege Escalation in Roundcube Webmail

Published May 25, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4604-1 roundcube security update
Debian DSA Debian DSA DSA-6301-1 roundcube security update
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Local Image Blocking Bypass Leading to Information Disclosure and Potential Privilege Escalation in Roundcube Webmail
Type Values Removed Values Added
Description 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.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-669
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 27, 2026, 3:55 AM
Reserved
May 25, 2026, 7:18 PM
Status
Deferred
Published
May 25, 2026, 8:16 PM
Modified
Jul 24, 2026, 10:10 AM