# CVE-2026-57827: Joomla Extension - rsjoomla.com - Unauthenticated file upload in RSFiles component < 1.17.12

> Unauthenticated attackers can upload executable files to the RSFiles Joomla extension, leading to remote code execution.

- **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/E:A/AU:Y/U:Red`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jul 2026
- **Updated:** 12 Aug 2026
- **Also known as:** GHSA-7q98-wg4p-5v7g

## What is CVE-2026-57827?

CVE-2026-57827 is a critical vulnerability in rsjoomla.com RSFiles extension for Joomla, published on 11 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla Extension - rsjoomla.com - Unauthenticated file upload in RSFiles component < 1.17.12 - The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-57827?

It affects 1 product.


Products: Rsjoomla Rsfiles\!.

## How do I fix CVE-2026-57827?

No fix has been published for CVE-2026-57827 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-57827 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57827 exists.

Public exploit code:

- CVE-2026-57827 — RSFiles! Joomla Component Unauthenticated File Upload RCE. Split-controller upload bypass. CVSS 9.8 | CWE-434 | com_rsfiles < 1.17.12 (github_poc): https://github.com/shinthink/CVE-2026-57827
- Unauthenticated File Upload → RCE PoC for CVE-2026-57827 (RSFiles! Joomla < 1.17.12). Authorized security research use only. (github_poc): https://github.com/Mohammad-008/rsfiles-CVE-2026-57827
- Joomla RSFiles 未授权文件上传CVE-2026-57827检测&利用脚本 (github_poc): https://github.com/jjkk123123/CVE-2026-57827
- Demonstrate the unauthenticated remote code execution vulnerability in the RSFiles! Joomla component through an arbitrary file upload. (github_poc): https://github.com/Candisexterior171/CVE-2026-57827
- RSFiles! for Joomla - Arbitrary File Upload (nuclei): http/cves/2026/CVE-2026-57827.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57827 and fix it if it is affected.

What it is: CVE-2026-57827 is a critical vulnerability in rsjoomla.com RSFiles extension for Joomla, published on 11 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57827 exists.

Affected product: rsjoomla.com RSFiles extension 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-2026-57827/ (Markdown: https://insights.sbomify.com/CVE-2026-57827/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57827
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57827
- OSV: https://osv.dev/vulnerability/CVE-2026-57827

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57827/
Summaries are generated and may contain mistakes; the official description above is the record.