# CVE-2026-49486: Apache Airflow FTP provider: FTP Provider does not protect FTPS data channel (missing PROT_P)

> Attackers can intercept cleartext FTPS data channels to read file contents and credentials due to missing PROT_P command in Apache Airflow FTP provider.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Jun 2026
- **Updated:** 16 Sep 2026
- **Also known as:** CLEANSTART-2026-HE71262, ECHO-48d4-6d76-5430, GHSA-fgch-86x8-fv43, MINI-744g-rj96-4475, MINI-fgvj-f7rp-x5fm, PYSEC-2026-238

## What is CVE-2026-49486?

CVE-2026-49486 is a high-severity vulnerability in Apache Airflow FTP provider, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Apache Airflow FTP provider's `FTPSHook.get_conn()` created an `ftplib.FTP_TLS` connection but never called `prot_p()`, so although the control channel was TLS-protected the data channel was transmitted in cleartext. Any deployment using `FTPSHook` or `FTPSFileTransmitOperator` to move files over FTPS exposed file contents and credentials-in-transit to a network attacker able to observe the data connection. Upgrade apache-airflow-providers-ftp to `3.15.1` or later, which issues `PROT P` to encrypt the data channel.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2026-49486?

3 open source packages ship an affected version, including apache-airflow-providers-ftp. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apache-airflow-providers-ftp` | PyPI | All versions | 3.15.1 |
| `apache-airflow-providers-ftp` | PyPI | All versions | 3.15.1 |
| `apache-airflow-providers-ftp` | PyPI | All versions | 3.15.1 |

Products: Apache Apache-Airflow-Providers-Ftp.

## How do I fix CVE-2026-49486?

Upgrade apache-airflow-providers-ftp to 3.15.1 or later.

## Is CVE-2026-49486 being exploited?

There is no known exploitation of CVE-2026-49486 in the wild and no public exploit code.

## Other vulnerabilities in Apache Airflow FTP provider

- [CVE-2024-29733](https://insights.sbomify.com/CVE-2024-29733/): Apache Airflow FTP Provider: FTP_TLS instance with unverified SSL context (low 2.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49486 and fix it if it is affected.

What it is: CVE-2026-49486 is a high-severity vulnerability in Apache Airflow FTP provider, published on 26 Jun 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-2026-49486 in the wild and no public exploit code.

Affected packages and fixed versions:
- apache-airflow-providers-ftp (PyPI): affected all versions; fixed in 3.15.1
- apache-airflow-providers-ftp (PyPI): affected all versions; fixed in 3.15.1
- apache-airflow-providers-ftp (PyPI): affected all versions; fixed in 3.15.1

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-2026-49486/ (Markdown: https://insights.sbomify.com/CVE-2026-49486/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49486
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49486
- OSV: https://osv.dev/vulnerability/CVE-2026-49486

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-49486/
Summaries are generated and may contain mistakes; the official description above is the record.