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Go/golang.org/x/net CVE-2026-39821: unknown, EPSS 1.83%

Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna

Action: Upgrade golang.org/x/net to 0.55.0 or later.

go get golang.org/x/net@v0.55.0

Affected

introducedfixedlast affected
00.55.0-

Fixed versions

0.55.0

Sources

CVE-2026-39821 · published · modified · JSON