Home/CVE/Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when
CVE

CVE-2025-22870

Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when

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.

MEDIUM · CVSS 4.4 EPSS 0.00024
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-115Misinterpretation of Input
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go golang.org/x/net MODERATE fixed in 0.36.0
Go stdlib fixed in 1.23.7, 1.24.1
▣

Scoring & Timeline

4.4
MEDIUM · CVSS v3.1 · security@golang.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Mar 2025 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
suse-csafopenSUSE-SU-2026:20730-1
suse-csafopenSUSE-SU-2026:20654-1
suse-csafopenSUSE-SU-2026:20620-1
suse-csafSUSE-SU-2026:0592-1
suse-csafopenSUSE-SU-2026:10230-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://go.dev/cl/654697
https://go.dev/issue/71984
https://groups.google.com/g/golang-announce/c/4t3lzH3I0eI/m/b42ImqrBAQAJ
https://pkg.go.dev/vuln/GO-2025-3503
http://www.openwall.com/lists/oss-security/2025/03/07/2
https://security.netapp.com/advisory/ntap-20250509-0007/
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