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CVE-2026-56852— Infinite loop on invalid input in golang.org/x/text

Quick assessment

Affected
golang.org/x/text golang.org/x/text/unicode/norm
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Google公司开源的一种静态强类型、编译型、并发型,并具有垃圾回收功能的编程语言。 Google Go存在资源管理错误漏洞，该漏洞源于处理包含无效UTF-8字节的输入时，norm.Iter可能会进入无限循环。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.47% · P40

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
golang.org/x/text golang.org/x/text/unicode/norm < 0.39.0 affected
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I. Basic Information for CVE-2026-56852

Vulnerability Information
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Vulnerability Title
Infinite loop on invalid input in golang.org/x/text
Source: CVE Program / CVE List V5
Vulnerability Description
A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.
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 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go是美国Google公司开源的一种静态强类型、编译型、并发型,并具有垃圾回收功能的编程语言。 Google Go存在资源管理错误漏洞，该漏洞源于处理包含无效UTF-8字节的输入时，norm.Iter可能会进入无限循环。
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/text golang.org/x/text/unicode/norm 0 ~ 0.39.0 -

II. Public POCs for CVE-2026-56852

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III. Intelligence Information for CVE-2026-56852

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Patches & Fixes for CVE-2026-56852 (1)

Other References for CVE-2026-56852 (2)

IV. Related Vulnerabilities

Same vendor: golang.org/x/text

V. Comments for CVE-2026-56852

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