CVE-2026-54133

CVE-2026-54133 · jmespath.php has CompilerRuntime code injection via unescaped function names

This page contains facts from public vulnerability sources. Check the original advisory before updating.

jmespath.php allows users to use JMESPath, software for declaratively specifying how to extract elements from a JSON document, in PHP applications with PHP data structures. Versions prior to 2.9.1 can generate and execute attacker-controlled PHP code when `JmesPath\CompilerRuntime` is used with an attacker-controlled JMESPath expression. The compiler emits parsed JMESPath function names into generated PHP source without sufficient escaping. A crafted expression can cause the generated cache file to contain executable attacker-controlled PHP, which is then loaded by the compiler runtime. The issue is patched in `2.9.1` and later. As a workaround, disable `JP_PHP_COMPILE` and do not use `JmesPath\CompilerRuntime` with attacker-controlled expressions. Use the default `AstRuntime` for untrusted expressions. Applications that must continue accepting untrusted JMESPath expressions before upgrading should ensure those expressions are never evaluated by the compiler runtime.

CVSS 9.8 · Critical · EPSS 0.4% · Fix available

Published

2026-06-12T13:56:37.874Z

Updated

2026-06-12T15:07:16.654Z

Stack: php

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