For WordPress, 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.

WordPress - PHP compatibility for the PHP2Shell fix

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

  • wp-includes/version.php
  • wp-content/plugins/
  • wp-content/themes/

WordPress - Remove blockers to patch PHP2Shell

WordPress core, themes and plugins have separate PHP constraints. Identify the installed core in Site Health or version.php and include child themes, must-use plugins and drop-ins in the audit. Update and test a complete copy before switching the domain’s Web PHP. The low minimum in an old core release is not a recommendation to keep an unsupported interpreter.

Dependencies and custom code to review

  • wp-content/themes/
  • functions.php
  • mu-plugins/
  • drop-ins
  • object-cache.php
  • php.ini
  • wp-config.php
  • wp-cron.php
Official upgrade documentation ↗WordPress - PHP compatibility for the PHP2Shell fix ↗

Check site functions after the PHP2Shell fix

Inventory before fixing PHP2Shell

Use an authorized working copy.

Command example
php -v
php --ini
php -m

WordPress - 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 ↗

Official upgrade documentation

WordPressOriginal source ↗PHP security teamOriginal source ↗CVE-2026-109618Original source ↗CVE-2026-109619Original source ↗PHP2Shell repair - solve PHP upgrade errors↗

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