CVE-2026-56852

HIGH 7.5

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

CVSS Score

7.5

EPSS Score

0.4%

EPSS Percentile

37th

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

Vendor	golang.org/x/text
Product	golang.org/x/text/unicode/norm
Published	Jul 21, 2026
Last Updated	Aug 10, 2026

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Affected Versions

golang.org/x/text / golang.org/x/text/unicode/norm

0 < 0.39.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Viky Choi ("vikychoi" on GitHub)