CVE-2026-56852 - Vulnerability Details - OpenCVE

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00222.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

golang.org/x/text

golang.org/x/text/unicode/norm

unaffected

Version	Status	Constraints
`0`	affected	< 0.39.0

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products
Golang Subscribe	Text Subscribe

Project Subscriptions

Vendors	Products
Golang Subscribe	Text Subscribe

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://go.dev/cl/794100
https://go.dev/issue/80142
https://pkg.go.dev/vuln/GO-2026-5970

History

Fri, 24 Jul 2026 03:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-400

Thu, 23 Jul 2026 21:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Golang Golang text
Vendors & Products		Golang Golang text

Thu, 23 Jul 2026 14:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-835
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 21 Jul 2026 19:45:00 +0000

Type	Values Removed	Values Added
Description		A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.
Title		Infinite loop on invalid input in golang.org/x/text
References		https://go.dev/cl/794100 https://go.dev/issue/80142 https://pkg.go.dev/vuln/GO-2026-5970

Projects

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MITRE

Status: PUBLISHED

Assigner: Go

Published: 2026-07-21T19:18:59.951Z

Updated: 2026-07-23T13:26:20.232Z

Reserved: 2026-06-23T15:10:49.352Z

Link: CVE-2026-56852

Vulnrichment

Updated: 2026-07-23T13:26:06.151Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-24T03:15:02Z

Weaknesses

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