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CVE-2025-22870

Good to know:

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Date: March 12, 2025

In Go net/http, x/net/proxy, x/net/http/httpproxy there is a proxy bypass vulnerability using IPv6 zone IDs. Matching of hosts against proxy patterns could improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable was set to "*.example.com", a request to "[::1%25.example.com]:80` would incorrectly match and not be proxied. This affects versions before 1.23.7 and 1.24.x before 1.24.1.

Severity Score

Related Resources (10)

https://nvd.nist.gov/vuln/detail/CVE-2025-22870
https://security.netapp.com/advisory/ntap-20250509-0007
http://www.openwall.com/lists/oss-security/2025/03/07/2
https://security.netapp.com/advisory/ntap-20250509-0007/
https://go.dev/cl/654697
https://github.com/golang/go/issues/71984
https://go-review.googlesource.com/q/project:net
https://go.dev/issue/71984
https://pkg.go.dev/vuln/GO-2025-3503
https://www.mend.io/vulnerability-database/CVE-2025-22870

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

Misinterpretation of Input

CWE-115

Top Fix

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Upgrade Version

Upgrade to version golang.org/x/net - v0.36.0;https://github.com/golang/go.git - go1.23.6;https://github.com/golang/go.git - go1.24.1;https://github.com/golang/net.git - v0.36.0

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): LOW

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