CVE-2026-46644

CVE-2026-46644 affects symfony/polyfill-intl-idn (1.17.1–1.38.1). The Idn::process() routine does not enforce UTS #46 rev 33 after Punycode decoding, allowing xn-- labels with empty or ASCII-only payloads to be treated as equal to their decoded form. This can enable blacklist bypass, inconsistent...