MEDIUMCVSS v3.1 4.8Vulnerability
CVE-2026-114437
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.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-10-22T22:14:18.200859+00:00
- Epss score
- 0.00126
- Cvss score
- 4.8
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-10-22T22:17:33+00:00
- Score
- 4.8
- Last source
- FIRST EPSS
- Cvss version
- 3.1
- Cve id
- CVE-2026-114437
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- First seen by Signal
- 2026-10-21T22:34:38+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- Published at
- 2026-10-21T14:17:14.690
- Last modified
- 2026-10-21T18:17:27.563
- Epss percentile
- 0.02095
Related Entities (1)
HAS_WEAKNESS (1)
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