CVE-2026-35543

Medium

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 SVG content (with animate attributes) in an e-mail message. This may lead to information disclosure or access-control bypass.

SeverityMedium
CVSS5.3
Exploit probability—
ProductRoundcube Webmail
PublishedApr 3, 2026
First seenApr 3, 2026
Weakness typeCWE-669CWE-669

How to fix

Update
  • roundcube webmail1.5.14, 1.6.14 or later
  • roundcube/roundcubemail1.7-rc5 or later

Affected products

ProductAffected versionsFixed in
roundcube webmailv < 1.5.14, 1.6.0 ≤ v < 1.6.141.5.14, 1.6.14
roundcube/roundcubemailPackagist1.7-beta ≤ v < 1.7-rc51.7-rc5

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CVE-2026-35543 · Roundcube Webmail · Dark Radar