CVE-2026-8739

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-05-17 08:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-26 13:10 UTC Last updatedMost recent change to the record

Details

Published

2026-05-17 08:16 UTC

Last modified

2026-10-26 13:10 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-320

Record status

Deferred

Attack profile CVSS 4.0 · 5.5

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

None

Integrity

Low

Availability

None