CVE-2026-8739: Sanluan Publiccms

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability was detected in Sanluan PublicCMS 5.202506.d. The affected element is the function getSignKey of the file publiccms-core/src/main/java/com/publiccms/logic/component/config/SafeConfigComponent.java. The manipulation of the argument privatefile_key results in use of hard-coded cryptographic key . The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Sanluan Publiccms: version 5.202506.d only

Published 2026-05-17. Last modified 2026-06-17.