# Apache Airflow allows code execution through crafted XCom payloads

Advisory record · `GHSA-6ffj-2wg2-w45j`

- **Identifiers:** `GHSA-6ffj-2wg2-w45j` · `BIT-airflow-2026-25917` · `CVE-2026-25917` · `PYSEC-2026-13` · `PYSEC-2026-2359`
- **State:** Confirmed
- **Severity:** CVSS 7.2 High
- **Critical:** No
- **Weakness (CWE):** [CWE-502](https://cwe.mitre.org/data/definitions/502.html)
- **Tags:** [Insecure deserialization](https://agentprime.io/advisories/tag/deserialization.md)
- **Published:** 18 Apr 2026
- **Updated:** 13 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 18 Apr 2026, 09:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `apache-airflow-core` (PyPI): affected `<3.2.0`; fixed in `3.2.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Apache Airflow (apache-airflow-core) versions before 3.2.0 are vulnerable. A DAG author, who normally cannot execute code in the webserver context, can craft an XCom payload that makes the webserver execute arbitrary code. Users should upgrade to apache-airflow-core 3.2.0 or later.

Written 6 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 7.2 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0082, the 57th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 18 Apr 2026, 06:20 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-25917)
- 18 Apr 2026, 07:16 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-25917)
- 31 Oct 2026, 15:01 UTC: First seen by agentprime
- 31 Oct 2026, 15:01 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-6ffj-2wg2-w45j)

## Sources

- [GitHub Advisory Database: GHSA-6ffj-2wg2-w45j](https://github.com/advisories/GHSA-6ffj-2wg2-w45j)
- [OSV: GHSA-6ffj-2wg2-w45j](https://osv.dev/vulnerability/GHSA-6ffj-2wg2-w45j)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-25917>
- <https://github.com/apache/airflow/pull/61641>
- <https://github.com/apache/airflow>
- <https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-13.yaml>
- <https://lists.apache.org/thread/6whgpkqbh12rvpfmvcg8b0vwlv4hq3po>
- <http://www.openwall.com/lists/oss-security/2026/04/17/9>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-6ffj-2wg2-w45j>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-6ffj-2wg2-w45j/>. Everything for agents: <https://agentprime.io/llms.txt>.