For Phalcon, 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.
Phalcon - PHP compatibility for the PHP2Shell fix
| Release sample | Declared PHP requirement | Declared patch candidates | Original source |
|---|---|---|---|
| 5.9 | >=8.1 | docs.phalcon.io ↗ |
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
composer.lockphp.inipublic/index.php
Phalcon - Remove blockers to patch PHP2Shell
Phalcon is a compiled PHP extension. Composer updates alone cannot install a matching phalcon.so or Windows DLL. The 5.9 documentation declares PHP 8.1 or newer, but this does not certify every ABI or binary package. Match PHP version, architecture and NTS/ZTS, rebuild or install the vendor-supported extension, and confirm it loads in FPM as well as CLI.
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 --ri phalcon
php --ini
php -mPhalcon - 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 ↗