Open Redirect Affecting github.com/go-chi/chi/v5/middleware package, versions >=5.2.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMGOCHICHIV5MIDDLEWARE-22382482
- published9 Nov 2026
- disclosed4 Nov 2026
- creditUnknown
Introduced: 4 Nov 2026
NewCVE-2026-122132 (opens in a new tab)How to fix?
There is no fixed version for github.com/go-chi/chi/v5/middleware.
Overview
Affected versions of this package are vulnerable to Open Redirect in the RedirectSlashes middleware in middleware/strip.go. An attacker can redirect a user to an external site with a link whose path ends in a slash and contains a tab character before a hostname, which the middleware passes into the 301 Location header and the browser strips to leave a protocol-relative //host target. Only applications that install middleware.RedirectSlashes are affected, and the redirect is performed by the victim's browser, so it requires the user to follow the link.
Workaround
This vulnerability can be avoided by rejecting request paths that contain control characters (tab, carriage return, line feed) at a reverse proxy or in a net/http wrapper before they reach RedirectSlashes.
Note: This is a bypass of the fix for the vulnerability described in CVE-2025-69725.