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Fencer Vulns
medium 5.1

CVE-2025-71405 json

go-chi chi before v5.2.2 Open Redirect via RedirectSlashes

published 2025-06-20 16 mo ago modified 2026-10-08 31 d ago also GHSA-vrw8-fxc6-2r93 , GO-2025-3770 , EUVD-2025-210728

cvss
5.1
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

chi versions before v5.2.2 contain an open redirect vulnerability in the RedirectSlashes middleware function that uses the Host header to construct redirect URLs. Attackers can manipulate the Host header to redirect users to arbitrary hosts, enabling phishing attacks and credential theft.

Patch / fix

  • go github.com/go-chi/chi/v5 5.2.2
  • go-chi chi 5.2.2
  • golang-github-go-chi-chi Debian 14 5.2.3-1

debian advisories DEBIAN-CVE-2025-71405

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-71405 updated cvss 5.4

github.com/go-chi/chi: go-chi/chi: Open Redirect vulnerability via RedirectSlashes middleware

  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/opa-openshift-rhel9 Red Hat Multicluster Engine for Kubernetes multicluster-engine/managedcluster-import-controller-rhel9 Red Hat OpenShift Pipelines openshift-pipelines-client 1.15.3-11580.el8 Red Hat OpenShift Serverless openshift-serverless-1/kn-plugin-event-sender-rhel9 Red Hat Advanced Cluster Management for Kubernetes 2 flightctl-agent, flightctl-selinux, flightctl 0.5.1-2.el8fc, rhacm2/observatorium-rhel9 Red Hat Enterprise Linux 8 osbuild-composer, osbuild-composer-core, osbuild-composer-worker, osbuild-composer-dnf-json
    +9 more products
    Red Hat OpenShift Container Platform 4 cri-o, openshift4/ose-telemeter, openshift4/ose-telemeter-rhel9, openshift4/oc-mirror-plugin-rhel9 Red Hat OpenShift Container Platform 5 openshift5/ose-telemeter-rhel9 Red Hat OpenShift Dev Spaces devspaces/udi-rhel9 Red Hat OpenShift distributed tracing 3 rhosdt/tempo-gateway-opa-rhel9 Red Hat Quay 3 quay/quay-rhel8, quay/quay-rhel9 Red Hat Satellite 6 satellite/iop-ingress-rhel9 Red Hat Trusted Artifact Signer rhtas/cosign-rhel9, rhtas/rekor-cli-rhel9, rhtas/rekor-server-rhel9, rhtas/rekor-backfill-redis-rhel9 Red Hat Web Terminal web-terminal/web-terminal-tooling-rhel9 Red Hat Zero Trust Workload Identity Manager - Tech Preview zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9, zero-trust-workload-identity-manager/spiffe-spire-server-rhel9, zero-trust-workload-identity-manager/spiffe-spire-oidc-discovery-provider-rhel9, zero-trust-workload-identity-manager/zero-trust-workload-identity-manager-rhel9, zero-trust-workload-identity-manager/zero-trust-workload-identity-manager-operator-bundle
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/go-chi/chi/security/advisories/GHSA-vrw8-fxc6-2r93 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 5.1 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
CNA 4.0 5.1 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
go github.com/go-chi/chi/v5
<5.2.2
>=5.2.1, <5.2.2
5.2.2

Affected products

  • go-chi chi

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.