# CVE-2026-97163: File upload in UP plugin for Joomla

> Unauthenticated attackers can remotely install arbitrary code via the UP plugin for Joomla, leading to full system compromise.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Sep 2026
- **Updated:** 27 Sep 2026
- **Also known as:** GHSA-6pgc-8534-jjrf

## What is CVE-2026-97163?

CVE-2026-97163 is a critical vulnerability in lomart.fr UP plugin for Joomla, published on 26 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla Extension - lomart.fr - Unauthenticated remote code installation in UP plugin extension 5.0.0-5.2.0, 6.0.0-6.0.29

Weakness: CWE-284 (Improper Access Control), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-97163?

It affects 1 product.


Products: Lomart Up.

## How do I fix CVE-2026-97163?

No fix has been published for CVE-2026-97163 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-97163 being exploited?

There is no known exploitation of CVE-2026-97163 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-97163 PoC: Joomla UP (lomart.fr) unauthenticated GitHub mini-install / remote action deployment (≤6.0.29). Detects plugin version, probes com_ajax install triggers. Fix: UP 6.1.0 / 5.2.1. https://pocbit.org/pocs/cve-2026-97163 (github_poc): https://github.com/murrez/CVE-2026-97163
- CVE-2026-97163 PoC payload (UP plugin Joomla remote code installation) (github_poc): https://github.com/kize7/cve-2026-97163-payload

## Other vulnerabilities in lomart.fr UP plugin for Joomla

- [CVE-2026-97160](https://insights.sbomify.com/CVE-2026-97160/): Code injection in UP plugin for Joomla (critical 9.4)
- [CVE-2026-97161](https://insights.sbomify.com/CVE-2026-97161/): Path traversal in UP plugin for Joomla (critical 9.2)
- [CVE-2026-97162](https://insights.sbomify.com/CVE-2026-97162/): Joomla Extension - lomart.fr - Various SQL injection vectors in UP plugin extension 5.0.0-5.2.0, 6.0.0-6.0.29 (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-97163 and fix it if it is affected.

What it is: CVE-2026-97163 is a critical vulnerability in lomart.fr UP plugin for Joomla, published on 26 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-97163 in the wild and no public exploit code.

Affected product: lomart.fr UP plugin for Joomla. 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-2026-97163/ (Markdown: https://insights.sbomify.com/CVE-2026-97163/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-97163
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-97163
- OSV: https://osv.dev/vulnerability/CVE-2026-97163

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-97163/
Summaries are generated and may contain mistakes; the official description above is the record.