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

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

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Feb 2026
- **Updated:** 27 Feb 2026
- **Also known as:** GHSA-pw4j-xhwf-vgmr

## 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 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-3289?

It affects 1 product.


Products: 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.

## Is CVE-2026-3289 being exploited?

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

## Other vulnerabilities in Sanluan PublicCMS

- [CVE-2025-25361](https://insights.sbomify.com/CVE-2025-25361/): File upload in n/a (critical 9.8)
- [CVE-2023-46990](https://insights.sbomify.com/CVE-2023-46990/): Deserialization in n/a (critical 9.8)
- [CVE-2023-34852](https://insights.sbomify.com/CVE-2023-34852/): Missing authorization in n/a (critical 9.8)
- [CVE-2020-20914](https://insights.sbomify.com/CVE-2020-20914/): SQL injection in n/a (critical 9.8)
- [CVE-2020-20915](https://insights.sbomify.com/CVE-2020-20915/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3289 and fix it if it is affected.

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

Affected product: Sanluan PublicCMS. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-3289/ (Markdown: https://insights.sbomify.com/CVE-2026-3289/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3289
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3289
- OSV: https://osv.dev/vulnerability/CVE-2026-3289

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3289/
Summaries are generated and may contain mistakes; the official description above is the record.