CVE-2026-122132

medium

Description

go-chi chi 5.2.2 through 5.5.0 contains an open redirect vulnerability in the RedirectSlashes middleware that allows attackers to redirect victims to external hosts by embedding tab characters in request paths. Attackers can craft links with a URL-encoded tab, which browsers strip from the 301 Location header and resolve as a protocol-relative URL, bypassing the fix for CVE-2025-69725.

References

https://www.vulncheck.com/advisories/go-chi-chi-5.2.2-through-5.5.0-open-redirect-via-redirectslashes-middleware

https://github.com/go-chi/chi/security/advisories/GHSA-mqqf-5wvp-8fh8

https://github.com/go-chi/chi/pull/1238

https://github.com/go-chi/chi/blob/v5.5.0/middleware/strip.go#L41-L69

https://github.com/go-chi/chi

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117086

Details

Source: Mitre, NVD

Published: 2026-11-04

Updated: 2026-11-05

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 5.1

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00269