CVE-2026-8739 MEDIUM

CVE-2026-8739: Sanluan PublicCMS SafeConfigComponent.java getSignKey hard-coded key

Vendor Sanluan
Product PublicCMS
Weakness CWE-321
Published May 17, 2026
Last update May 18, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

What the vulnerability does

Description

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.

Key dates

Disclosure timeline

May 17, 2026 CVE published
May 18, 2026 Record updated