CVE-2026-48784

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate used strtr dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters...

CVE-2026-48784

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate used strtr dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters...

CVE-2026-48784

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate used strtr dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters...

CVE-2026-45065

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, UrlGenerator validates route parameters against a pattern built as ^ plus the raw requirement plus $; with ungrouped alternations, middle alternatives mat...

CVE-2026-45065

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, UrlGenerator validates route parameters against a pattern built as ^ plus the raw requirement plus $; with ungrouped alternations, middle alternatives mat...

CVE-2026-45065

CVE-2026-45065 affects Symfony’s UrlGenerator in the Symfony PHP framework. Prior to versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12, UrlGenerator validates route parameters with a pattern built as ^ + raw requirement + $, and ungrouped alternations can cause middle alternatives to match as unanchore...

GHSA-H5X3-XFC9-M39H Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route Under RFC 3986 Normalization

Description Symfony\Component\Routing\Generator\UrlGenerator::doGenerate percent-encodes . and .. path segments so that the generated URL still resolves to the originating route after RFC 3986 §5.2.4 dot-segment removal which strict RFC-3986 consumers — routers, reverse proxies, HTTP clients —...

Improper Encoding or Escaping of Output

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output via the UrlGenerator due to incorrectly encoding chained dot-segments ../ or ./. The legacy...

PT-2026-44134

Name of the Vulnerable Software and Affected Versions Symfony versions prior to 5.4.25 Description The UrlGenerator class, used by Twig path and url helpers, fails to properly anchor regular expressions when validating path parameters that use alternations. The validation pattern is constructed a...

CVE-2026-45065: UrlGenerator Route-Requirement Bypass via Unanchored Regex Alternation → Off-Site //host URL Injection

More info at https://symfony.com/cve-2026-45065...

CVE-2026-48784: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route Under RFC 3986 Normalization

More info at https://symfony.com/cve-2026-48784...