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

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-02-07 · updated 2026-06-17
Weakness: CWE-200

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.

Affected products

Debian Linux: 9.0
Fedoraproject Fedora: 35, 36
twisted: from 11.1.0 before 22.1.0 — fixed in 22.1.0

How to fix

Upgrade to a fixed version: twisted 22.1.0. Check the vendor advisory for mitigations.

References

https://github.com/twisted/twisted/commit/af8fe78542a6f2bf2235ccee8158d9c88d31e8e2
https://github.com/twisted/twisted/releases/tag/twisted-22.1.0
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
https://github.com/twisted/twisted/security/advisories/GHSA-92x2-jw7w-xvvx
https://lists.debian.org/debian-lts-announce/2022/02/msg00021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
https://security.gentoo.org/glsa/202301-02

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