CVE-2022-32148

Name: CVE-2022-32148
Creator: NVD / NIST
Published: 2022-08-10T20:15:47.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2022-32148 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Improper exposure of client IP addresses in net/http before Go 1.17.12 and Go 1.18.4 can be triggered by calling httputil.ReverseProxy.ServeHTTP with a Request.Header map containing a nil value for the X-Forwarded-For header, which causes ReverseProxy to set the client IP as the value of the X-Forwarded-For header.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

Improper exposure of client IP addresses in net/http before Go 1.17.12 and Go 1.18.4 can be triggered by calling httputil.ReverseProxy.ServeHTTP with a Request.Header map containing a nil value for the X-Forwarded-For header, which causes ReverseProxy to set the client IP as the value of the X-Forwarded-For header.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.10%

61.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Golang	Go	< 1.17.12
Golang	Go	>= 1.18.0, < 1.18.4

References

https://go.dev/cl/412857Patch
https://go.dev/issue/53423Exploit, Issue Tracking, Third Party Advisory
https://go.googlesource.com/go/+/b2cc0fecc2ccd80e6d5d16542cc684f97b3a9c8aMailing List, Patch
https://groups.google.com/g/golang-announce/c/nqrv9fbR0zEMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2022-0520Vendor Advisory
https://go.dev/cl/412857Patch
https://go.dev/issue/53423Exploit, Issue Tracking, Third Party Advisory
https://go.googlesource.com/go/+/b2cc0fecc2ccd80e6d5d16542cc684f97b3a9c8aMailing List, Patch
https://groups.google.com/g/golang-announce/c/nqrv9fbR0zEMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2022-0520Vendor Advisory

Timeline

Published: Aug 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-32148?

How severe is CVE-2022-32148?

CVE-2022-32148 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2022-32148?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-32148?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST