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Vulnerabilities

Vulnerability · GHSA-7cgw-qmxx-7fc2

Duplicate Advisory: chi: Client IP spoofing in ClientIPFromXFF via X-Forwarded-For

Published Oct 21, 2026 · catalog updated Oct 23, 2026 · Duplicate Advisory: chi: Client

Last checked Oct 28, 2026, 11 days ago.

Open the advisory

Exploitation likelihood is not on this record for GHSA-7cgw-qmxx-7fc2. A missing EPSS score is not a low risk. Compare Duplicate Advisory: chi: Client with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Duplicate Advisory: chi: Client).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
Go github.com/go-chi/chi/v5

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-j6qf-3m9c-vwj3. This link is maintained to preserve external references. ## Original Description In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CIDR. A client that can reach the Go server directly can therefore append a trusted-looking proxy address and choose the client IP returned by middleware.GetClientIP. This issue affects chi before 5.4.0.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Go github.com/go-chi/chi/v50 → 5.3.2

How to fix GHSA-7cgw-qmxx-7fc2

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for GHSA-7cgw-qmxx-7fc2. A missing EPSS score is not a low risk. Compare Duplicate Advisory: chi: Client with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 5.3.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-348. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 21, 2026 · GitHub Advisory Database

    Detected

    ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-j6qf-3m9c-vwj3. This link is maintained to preserve external references. ## Original Description In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CI

  2. Oct 23, 2026 · GitHub Advisory Database

    Withdrawn

    The advisory was withdrawn.

  3. Oct 23, 2026 · GitHub Advisory Database

    Fix available

    github.com/go-chi/chi/v5 fixed in 5.3.2

  4. Oct 23, 2026 · GitHub Advisory Database

    Updated

    ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-j6qf-3m9c-vwj3. This link is maintained to preserve external references. ## Original Description In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CI

Sources

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Go Vulnerability DatabaseOct 28, 2026
  • GitHub Advisory DatabaseOct 26, 2026
  • OpenSSF OSV / OSV ScannerOct 26, 2026