CLEANSTART-2026-CA23047: 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

Q: Which deployments should be investigated first?

Investigate deployments of cleanstart/gitea and cleanstart/kyverno that use the Golang Chi ClientIPFromXFF middleware, particularly where trusted CIDRs are configured for X-Forwarded-For processing.

Q: What validation is missing when determining the client IP address?

The middleware skips X-Forwarded-For entries within configured trusted CIDRs but does not verify that the direct TCP peer is trusted. This can affect client-IP determination when X-Forwarded-For input reaches the application from an unverified direct peer.

Published Nov 11, 2026

Updated

CVE-2026-114437 affects multiple packages. 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. See references for individual vulnerability details.

Affected Software

3 affected componentsFixes available

cleanstart/gitea<1.26.4-r5

1.26.4-r5

cleanstart/gitea<1.27.3-r2

1.27.3-r2

cleanstart/kyverno<1.19.2-r1

1.19.2-r1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade cleanstart/gitea to a version that resolves this vulnerability.
Fixed in 1.26.4-r5
Upgrade
Upgrade cleanstart/gitea to a version that resolves this vulnerability.
Fixed in 1.27.3-r2
Upgrade
Upgrade cleanstart/kyverno to a version that resolves this vulnerability.
Fixed in 1.19.2-r1

Event History

Nov 11, 2026

Advisory Published

via OSV·12:38 AM

Data Sourced

via OSV·12:38 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2026-114437

Frequently Asked Questions

Which deployments should be investigated first?

Investigate deployments of cleanstart/gitea and cleanstart/kyverno that use the Golang Chi ClientIPFromXFF middleware, particularly where trusted CIDRs are configured for X-Forwarded-For processing.

What validation is missing when determining the client IP address?

The middleware skips X-Forwarded-For entries within configured trusted CIDRs but does not verify that the direct TCP peer is trusted. This can affect client-IP determination when X-Forwarded-For input reaches the application from an unverified direct peer.

CLEANSTART-2026-CA23047: 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

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

Which deployments should be investigated first?

What validation is missing when determining the client IP address?

Company

Resources

Contact

Frequently Asked Questions

Which deployments should be investigated first?

What validation is missing when determining the client IP address?