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MEDIUM6.5

GO-2026-6572

Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses in github.com/cloudreve/Cloudreve

Quick fix

GO-2026-6572 — github.com/cloudreve/Cloudreve/v4: upgrade to the fixed version with the command below.

go get github.com/cloudreve/Cloudreve/v4@v4.0.0-20260715072853-1c5cad6dec7e

Details

Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses in github.com/cloudreve/Cloudreve

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/cloudreve/Cloudreve
Introduced in: 0

No fixed version published yet for github.com/cloudreve/Cloudreve (go modules). Pin to a known-safe version or switch to an alternative.

Go/github.com/cloudreve/Cloudreve/v3
Introduced in: 0

No fixed version published yet for github.com/cloudreve/Cloudreve/v3 (go modules). Pin to a known-safe version or switch to an alternative.

Go/github.com/cloudreve/Cloudreve/v4
Introduced in: 0Fixed in: 4.0.0-20260715072853-1c5cad6dec7e
Fixgo get github.com/cloudreve/Cloudreve/v4@v4.0.0-20260715072853-1c5cad6dec7e

References