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CVE-2025-4673— Sensitive headers not cleared on cross-origin redirect in net/http

Quick assessment

Affected
Go standard library net/http
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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Proxy-Authorization和Proxy-Authenticate标头持久化，可能导致敏感信息泄露。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-4673

Vulnerability Information
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Vulnerability Title
Sensitive headers not cleared on cross-origin redirect in net/http
Source: CVE Program / CVE List V5
Vulnerability Description
Proxy-Authorization and Proxy-Authenticate headers persisted on cross-origin redirects potentially leaking sensitive information.
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Proxy-Authorization和Proxy-Authenticate标头持久化，可能导致敏感信息泄露。
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 ~ 1.23.10 -

II. Public POCs for CVE-2025-4673

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III. Intelligence Information for CVE-2025-4673

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Mailing List Discussions for CVE-2025-4673 (1)

Same Patch Batch · Go standard library · 2025-06-11 · 3 CVEs total

CVE-2025-22874 Usage of ExtKeyUsageAny disables policy validation in crypto/x509
CVE-2025-0913 Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall

IV. Related Vulnerabilities

Same product: net/http
Same vendor: Go standard library

V. Comments for CVE-2025-4673

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