CVE-2026-75000

Medium

Description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper HTML/CSS sanitization of the SVG animate "by" attribute may lead to remote image blocking bypass, which in turn may lead to information disclosure or privilege escalation.

SeverityMedium
CVSS5.8
Exploit probability—
ProductRoundcube Webmail
PublishedAug 17, 2026
First seenAug 17, 2026
Weakness typeCWE-669CWE-669

How to fix

Update
  • roundcube webmail1.6.18, 1.7.3 or later

Affected products

ProductAffected versionsFixed in
roundcube webmail1.6.0 ≤ v < 1.6.18, 1.7.0 ≤ v < 1.7.31.6.18, 1.7.3

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2026-75000 · Roundcube Webmail · Dark Radar