# CVE-2026-93295: MISP Background Job Argument Injection via Console Path Switches Enables Remote Code Execution

> Attackers can achieve remote code execution by injecting path switches into background job arguments via the contact form, allowing arbitrary PHP execution.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **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:** 17 Sep 2026
- **Updated:** 22 Sep 2026
- **Also known as:** GHSA-2q9g-8hcw-6c23

## What is CVE-2026-93295?

CVE-2026-93295 is a high-severity code injection vulnerability in misp, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

MISP contains a vulnerability in its background job dispatch mechanism that allows remote code execution as the web user. Background job arguments are passed directly as the argv of the CakePHP console process. CakePHP's ShellDispatcher::_parsePaths() scans the entire argv for path switches (-app, --app, -working, --working, -root, --root, -webroot, --webroot) and uses the following element as the application root. The events/contact endpoint passes user-controlled fields (message and person) into job arguments without validation. An attacker who can submit the contact form can set the person field to a reserved switch and the message field to a phar:// URI pointing to a malicious archive. The CakePHP bootstrap then includes Config/core.php from within that archive, executing attacker-controlled PHP code with the privileges of the web user. 

The vulnerability requires the ability to submit the events/contact form (or any other endpoint that forwards user input into background job arguments). No special timing or race condition is required; the attack is deterministic once the crafted parameters are accepted. The impact is full remote code execution in the context of the MISP web server process, allowing data exfiltration, persistence, and lateral movement within the host.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-93295?


## How do I fix CVE-2026-93295?

No fix has been published for CVE-2026-93295 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-93295 being exploited?

There is no known exploitation of CVE-2026-93295 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-93295 and fix it if it is affected.

What it is: CVE-2026-93295 is a high-severity code injection vulnerability in misp, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-93295 in the wild and no public exploit code.

Affected product: misp. 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-2026-93295/ (Markdown: https://insights.sbomify.com/CVE-2026-93295/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-93295
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93295
- OSV: https://osv.dev/vulnerability/CVE-2026-93295

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-93295/
Summaries are generated and may contain mistakes; the official description above is the record.