For Symfony, PHP2Shell remediation requires patching the PHP runtime. The application version helps identify compatibility blockers; it cannot establish exploitability or prove that either CVE is fixed.
Symfony - PHP compatibility for the PHP2Shell fix
| Release sample | Declared PHP requirement | Declared patch candidates | Original source |
|---|---|---|---|
| v4.4.51 | >=7.1.3 | repo.packagist.org ↗8f1698ff2a97 | |
| v5.4.54 | >=7.2.5 | repo.packagist.org ↗af61a85f1337 | |
| v6.4.48 | >=8.1 | repo.packagist.org ↗53c3853a101a | |
| v7.4.21 | >=8.2 | repo.packagist.org ↗62b38e9cb02c | |
| v8.0.15 | >=8.4 | repo.packagist.org ↗f93319640546 |
Candidates match only this declaration against the first PHP2Shell fixes on supported branches. They do not establish tested compatibility, vendor support or a complete dependency match. PHP compatibility for the PHP2Shell fix ↗
Identify the PHP2Shell repair scope
Files and package identity
symfony/framework-bundle
composer.locksymfony.lockconfig/bundles.php
Symfony - Remove blockers to patch PHP2Shell
Use the project’s Symfony components and Flex recipes together, not only framework-bundle. Work through deprecations on the source release before crossing a major boundary. Doctrine, Twig, Messenger and security authenticators can block the move even when PHP satisfies the table. Rebuild the container in staging and exercise console workers as well as HTTP routes.
Dependencies and custom code to review
Official upgrade documentation ↗Check site functions after the PHP2Shell fix
Inventory before fixing PHP2Shell
Use an authorized working copy.
php -v
php --ini
composer --no-plugins show --locked symfony/framework-bundle
composer --no-plugins check-platform-reqs --lock
composer --no-plugins prohibits php 8.3.36 --lockedSymfony - PHP2Shell patch verification
Verify both CVE fixes in the PHP actually serving this site. Replace or restart old Web workers, queue workers and replicas. A working homepage or a newer CLI binary is insufficient evidence.
3. Restart and verify every instance ↗