CVE-2025-22870— HTTP Proxy bypass using IPv6 Zone IDs in golang.org/x/net
Quick assessment
Affected
Go standard library net/http
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞，该漏洞源于IPv6区域ID被错误地视为主机名的一部分，可能导致代理匹配错误。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-22870
Vulnerability Information
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Vulnerability Title
HTTP Proxy bypass using IPv6 Zone IDs in golang.org/x/net
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Google Go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞，该漏洞源于IPv6区域ID被错误地视为主机名的一部分，可能导致代理匹配错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Go standard library | net/http | 0 ~ 1.23.7 | - |
|
| golang.org/x/net | golang.org/x/net/http/httpproxy | 0 ~ 0.36.0 | - |
|
| golang.org/x/net | golang.org/x/net/proxy | 0 ~ 0.36.0 | - |
|
II. Public POCs for CVE-2025-22870
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | PoC CVE-2025-22870 (SSRF) | https://github.com/JoshuaProvoste/CVE-2025-22870 | POC Details |
| 2 | CVE-2025-22870 | https://github.com/B1ack4sh/Blackash-CVE-2025-22870 | POC Details |
| 3 | CVE-2025-22870 | https://github.com/Ashwesker/Blackash-CVE-2025-22870 | POC Details |
| 4 | CVE-2025-22870 | https://github.com/Ashwesker/Ashwesker-CVE-2025-22870 | POC Details |
AI-Generated POC
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Other References for CVE-2025-22870 (3)
IV. Related Vulnerabilities
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-
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Same vendor: Go standard library
-
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Enforce maximum recursion depth in encoding/asn1 -
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Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check
V. Comments for CVE-2025-22870
Anonymous User
2026-01-15 06:09:01Zaproxy alias impedit expedita quisquam pariatur exercitationem. Nemo rerum eveniet dolores rem quia dignissimos.