CVE-2026-3289 Sanluan PublicCMS Template Cache Generation TemplateCacheComponent.java saveMetadata path traversal

Medium 5.3 Published 27 Feb 2026 Updated 27 Feb 2026

Remote attackers can exploit a path traversal vulnerability in PublicCMS template cache generation to read or modify arbitrary files.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-3289?

CVE-2026-3289 is a medium-severity path traversal vulnerability in Sanluan PublicCMS, published on 27 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A weakness has been identified in Sanluan PublicCMS 6.202506.d. This impacts the function saveMetadata of the file TemplateCacheComponent.java of the component Template Cache Generation. Executing a manipulation can lead to path traversal. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-22

Which versions are affected by CVE-2026-3289?

It affects 1 product.

Products include Publiccms Publiccms.

How do I fix CVE-2026-3289?

No fix has been published for CVE-2026-3289 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-3289 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3289 exists.

Sources

Also known as GHSA-pw4j-xhwf-vgmr.