# CVE-2026-5041: code-projects Chamber of Commerce Membership Management System pageMail.php fwrite command injection

> Remote attackers can execute arbitrary commands via the mailSubject or mailMessage parameters in the admin pageMail.php file.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Mar 2026
- **Updated:** 30 Mar 2026
- **Also known as:** GHSA-j9px-j4m5-375m

## What is CVE-2026-5041?

CVE-2026-5041 is a medium-severity command injection vulnerability in code-projects Chamber of Commerce Membership Management System, published on 29 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was identified in code-projects Chamber of Commerce Membership Management System 1.0. Impacted is the function fwrite of the file admin/pageMail.php. The manipulation of the argument mailSubject/mailMessage leads to command injection. The attack may be initiated remotely. The exploit is publicly available and might be used.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-5041?


## How do I fix CVE-2026-5041?

No fix has been published for CVE-2026-5041 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5041 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5041 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5041 and fix it if it is affected.

What it is: CVE-2026-5041 is a medium-severity command injection vulnerability in code-projects Chamber of Commerce Membership Management System, published on 29 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5041 exists.

Affected product: code-projects Chamber of Commerce Membership Management System. 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-2026-5041/ (Markdown: https://insights.sbomify.com/CVE-2026-5041/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5041
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5041
- OSV: https://osv.dev/vulnerability/CVE-2026-5041

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5041/
Summaries are generated and may contain mistakes; the official description above is the record.