CVE-2026-56852

Infinite loop on invalid input in golang.org/x/text

State: Published
Severity: 7.5 High
Published: Jul 21, 2026
Updated: Aug 10, 2026
Reserved: Jun 23, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

Product	Versions
golang.org/x/text/unicode/normgolang.org/x/text	before 0.39.0Affected

References

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

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