CVE-2026-56852

HIGH

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

Title source: cna
STIX 2.1

Description

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

Scores

CVSS v3 7.5
EPSS 0.0045
EPSS Percentile 36.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-835
Status published
Products (1)
golang.org/x/text/golang.org/x/text/unicode/norm < 0.39.0
Published Jul 21, 2026
Tracked Since Jul 22, 2026