CVE-2025-228704.4MediumCWE-115

CVE-2025-22870: HTTP Proxy bypass using IPv6 Zone IDs in golang.org/x/net

Go standard library · net/http

Vendor fix available · Affected: Go standard library net/http · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.4%probability of exploitation in the next 30 days

37th percentile

050100

Higher than 37% of scored CVEs

4.4MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to "*.example.com", a request to "[::1%25.example.com]:80` will incorrectly match and not be proxied.

Affected products3

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Go standard library · net/httpbefore 1.23.7; from 1.24.0-0 before 1.24.1
golang.org/x/net · golang.org/x/net/http/httpproxybefore 0.36.0
golang.org/x/net · golang.org/x/net/proxybefore 0.36.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Misinterpretation of Input · Input Validation and Logic
Vendor: Go standard library
Published: March 2025
Band: Unlikely (under 1%), March 2025

CoverageNo articles yet

No CyberSIXT article names CVE-2025-22870 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.