CVE-2026-56852

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

Published Jul 21, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-400
Type Values Removed Values Added
Weaknesses CWE-400
Type Values Removed Values Added
First Time appeared Golang
Golang text
Vendors & Products Golang
Golang text
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'}

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
Weaknesses

Sources

Status
PUBLISHED
Assigner
Go
Published
Updated
Aug 10, 2026, 10:57 PM
Reserved
Jun 23, 2026, 3:10 PM
Status
Deferred
Published
Jul 21, 2026, 8:17 PM
Modified
Oct 24, 2026, 7:10 PM