CVE-2026-56852 Details
Description
A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.
An infinite loop vulnerability has been identified in the Golang text processing package, specifically within the unicode normalization module. This issue arises when the norm.Iter function processes input that contains invalid UTF-8 bytes, leading to unbounded execution time.
Users can update to Golang text package versions v0.39.0 or later, where this issue has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 21, 2026CISA-ADP
Assessed Jul 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://go.dev/cl/794100 | [email protected] | Source CodeVendor |
| https://go.dev/issue/80142 | [email protected] | Issue TrackingTechnical DescriptionVendor |
| https://pkg.go.dev/vuln/GO-2026-5970 | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-835 | Loop with Unreachable Exit Condition ('Infinite Loop') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| golang.org/x/text/unicode/norm | < v0.39.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Modified | CISA-ADP |
| Jul 21, 2026 | New CVE Received | [email protected] |