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.
{
"cwe_ids": [
"CWE-669"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-04T06:55:40Z",
"nvd_published_at": "2026-04-03T05:16:22Z",
"severity": "MODERATE"
}