symfony/polyfill vulnerabilities

Symfony polyfills backporting features to lower PHP versions

Registry
Composer
Latest
1.43.2
License
MIT
Source
github.com/symfony/polyfill (opens the source repository in a new tab)

2 known advisories

The latest version, 1.43.2, is not affected by any of them. Projects on older versions may be.

Update to the latest version:composer require symfony/polyfill:^1.43.2

Security advisories for symfony/polyfill

  • LowGHSA-2xf4-cg6j-vhgq28 May 2026

    symfony/polyfill-intl-idn: xn-- labels with ASCII-only Punycode payloads are treated as equivalent to their decoded form

    Affected
    >=1.17.1 <1.38.1
    Fixed in
    1.38.1
  • MediumGHSA-cr49-fx2v-9p5717 May 2022

    Symfony Denial of Service Via Long Password Hashing

    Affected
    >=1.0.0 <1.10.0
    Fixed in
    1.10.0

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Other Composer packages

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily. Package details from the Composer registry.