CVE-2026-35542: Medium severity Roundcube Webmail vulnerability

Published Apr 3, 2026
·
Updated

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.

Affected Software

3 affected componentsFixes available
composer/roundcube/roundcubemail>=1.7-beta<1.7-rc5
1.7-rc5
Roundcube Webmail<1.5.14
Roundcube Webmail>=1.6.0<1.6.14

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade composer/roundcube/roundcubemail to a version that resolves this vulnerability.

    Fixed in 1.7-rc5

Event History

Apr 3, 2026
CVE Published
via MITRE·03:54 AM
Data Sourced
via MITRE·03:54 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:16 AM
RemedyDescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·06:31 AM
Data Sourced
via GitHub·06:31 AM
DescriptionSeverityWeaknessAffected Software
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203