CVE-2026-54133
jmespath.php allows users to use JMESPath, software for declaratively specifying how to extract elements from a JSON document, in PHP applications with PHP dat…
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | mtdowling/jmespath.php | < 2.9.1 | 2.9.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jmespath | Jmespath | before 2.9.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pcw8-m77r-2528
- https://github.com/jmespath/jmespath.php/security/advisories/GHSA-pcw8-m77r-2528
- https://nvd.nist.gov/vuln/detail/CVE-2026-54133
- https://github.com/FriendsOfPHP/security-advisories/blob/master/mtdowling/jmespath.php/CVE-2026-54133.yaml