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CVE-2025-47911— Quadratic parsing complexity in golang.org/x/net/html

Quick assessment

Affected
golang.org/x/net golang.org/x/net/html
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golang.org/x/net/html的html.Parse函数处理特定输入时解析复杂度为二次方，攻击者提供特制HTML内容可能导致拒绝服务。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.57% · P45

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-47911

Vulnerability Information
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Vulnerability Title
Quadratic parsing complexity in golang.org/x/net/html
Source: CVE Program / CVE List V5
Vulnerability Description
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
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golang.org/x/net/html的html.Parse函数处理特定输入时解析复杂度为二次方，攻击者提供特制HTML内容可能导致拒绝服务。
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
golang.org/x/net golang.org/x/net/html 0 ~ 0.45.0 -

II. Public POCs for CVE-2025-47911

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III. Intelligence Information for CVE-2025-47911

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IV. Related Vulnerabilities

Same product: golang.org/x/net/html
Same vendor: golang.org/x/net

V. Comments for CVE-2025-47911

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