Twisted vulnerable to HTML injection in HTTP redirect body

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N · score source

EPSS

• CVE-2024-41810: 1.20% estimated exploitation activity in the next 30 days; percentile 68.24 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The twisted.web.util.redirectTo function contains an HTML injection vulnerability. If application code allows an attacker to control the redirect URL this vulnerability may result in Reflected Cross-Site Scripting (XSS) in the redirect response HTML body. Details Twisted’s redirectTo function generates an HTTP 302 Redirect response. The response contains an HTML body, built for exceptional cases where the browser doesn’t properly handle the redirect, allowing the user to click a link, navigating them to the specified destination. The function reflects the destination URL in the HTML body without any output encoding. If an attacker has full or partial control over redirect location due to an application bug, also known as an “Open Redirect”, they may inject arbitrary HTML into the response’s body, ultimately leading to an XSS attack. It’s worth noting that the issue is known to maintainers and tracked with GitHub Issue#9839. The issue description, however, does not make any…

Published by the source

29 Jul 2024, 17:29 UTC

Last modified by the source

4 Nov 2025, 17:06 UTC

Source last checked

26 Oct 2026, 13:35 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-cf56-g6w6-pqq2

2. Revision 2 · amended · 24 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-cf56-g6w6-pqq2

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# Patch Next advisory brief: CVE-2024-41810

Advisory: Twisted vulnerable to HTML injection in HTTP redirect body
IDs: CVE-2024-41810, GHSA-cf56-g6w6-pqq2
Record: https://patchnext.com/advisories/cve-2024-41810 (revision 3, source checked 26 Oct 2026, 13:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: twisted 24.7.0rc1. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI twisted: affected <= 24.3.0; fixed in 24.7.0rc1

## Suggested inspection (read-only)
- `python -m pip show twisted`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on twisted.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-cf56-g6w6-pqq2 (OSV record GHSA-cf56-g6w6-pqq2 lists affected ranges: PyPI twisted >=0 <24.7.0rc1 (fixed))
- Verified: https://github.com/advisories/GHSA-cf56-g6w6-pqq2 (GitHub-reviewed advisory GHSA-cf56-g6w6-pqq2 lists affected ranges: PyPI twisted >=0 <=24.3.0)

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