Is symfony/polyfill-intl-idn vulnerable?

Composer symfony/polyfill-intl-idn has 1 known advisory in the phpwarden feed. Feed 2026.10.29.4, updated 2026-10-29.

1advisories

0critical

0on CISA KEV

0no fix recorded

CVE	Title	Severity	CVSS	Affected	Fixed in
CVE-2026-46644	symfony/polyfill-intl-idn: xn-- labels with ASCII-only Punycode payloads are treated as equivalent to their decoded form	low	0.0	`>=1.17.1` and `<1.38.1`	`1.38.1`

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# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

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