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CVE-2025-61726— Memory exhaustion in query parameter parsing in net/url

Quick assessment

Affected
Go standard library net/url
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，该漏洞源于未限制查询参数数量，可能导致解析大量参数时消耗过多内存。

AI Predicted 5.3 Difficulty: Easy EPSS 2.33% · P83

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
Go standard library net/url < 1.24.12 affected
1.25.0< 1.25.6 affected
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I. Basic Information for CVE-2025-61726

Vulnerability Information
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Vulnerability Title
Memory exhaustion in query parameter parsing in net/url
Source: CVE Program / CVE List V5
Vulnerability Description
The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption.
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，该漏洞源于未限制查询参数数量，可能导致解析大量参数时消耗过多内存。
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/url 0 ~ 1.24.12 -

II. Public POCs for CVE-2025-61726

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III. Intelligence Information for CVE-2025-61726

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Same Patch Batch · Go standard library · 2026-01-28 · 3 CVEs total

CVE-2025-61730 Handshake messages may be processed at the incorrect encryption level in crypto/tls
CVE-2025-61728 Excessive CPU consumption when building archive index in archive/zip

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-61726

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