SSRF in Symfony Http-client

CVE-2026-48736

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.0 to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, NoPrivateNetworkHttpClient and IpUtils::PRIVATE_SUBNETS omitted IPv6 transition prefixes su…

Affected products

  • Symfony Http-client — versions >= 5.4.0, < 5.4.53
  • Symfony Http-foundation — versions >= 6.0.0-BETA1, < 6.4.41, >= 7.0.0-BETA1, < 7.4.13, >= 8.0.0-BETA1, < 8.0.13
  • Symfony — versions >= 5.4.0, < 5.4.53, >= 6.0.0-BETA1, < 6.4.41, >= 7.0.0-BETA1, < 7.4.13

Weakness classification (CWE)

References