# CVE-2026-5463: pymetasploit3 - Command Injection via Newline Injection in console.run_module_with_output()

> Attackers can inject newlines into module options to execute arbitrary commands via the Metasploit console.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Apr 2026
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-qpc3-8vqg-8g6w, PYSEC-2026-500

## What is CVE-2026-5463?

CVE-2026-5463 is a critical command injection vulnerability in Dan McInerney pymetasploit3, published on 3 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Command injection vulnerability in console.run_module_with_output() in pymetasploit3 through version 1.0.6 allows attackers to inject newline characters into module options such as RHOSTS. This breaks the intended command structure and causes the Metasploit console to execute additional unintended commands, potentially leading to arbitrary command execution and manipulation of Metasploit sessions.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-5463?

3 open source packages ship an affected version, including pymetasploit3. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `pymetasploit3` | PyPI | All versions to 1.0.6 | None |
| `pymetasploit3` | PyPI | All versions to 1.0.6 | None |
| `pymetasploit3` | PyPI | All versions to 1.0.6 | None |

Products: Danmcinerney Pymetasploit3.

## How do I fix CVE-2026-5463?

No fix has been published for CVE-2026-5463 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5463 being exploited?

There is no known exploitation of CVE-2026-5463 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5463 and fix it if it is affected.

What it is: CVE-2026-5463 is a critical command injection vulnerability in Dan McInerney pymetasploit3, published on 3 Apr 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-2026-5463 in the wild and no public exploit code.

Affected packages and fixed versions:
- pymetasploit3 (PyPI): affected all versions up to 1.0.6; no fix listed
- pymetasploit3 (PyPI): affected all versions up to 1.0.6; no fix listed
- pymetasploit3 (PyPI): affected all versions up to 1.0.6; no fix listed

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-2026-5463/ (Markdown: https://insights.sbomify.com/CVE-2026-5463/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5463
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5463
- OSV: https://osv.dev/vulnerability/CVE-2026-5463

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5463/
Summaries are generated and may contain mistakes; the official description above is the record.