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 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 v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jmespath/jmespath.php/security/advisories/GHSA-pcw8-m77r-2528	Mitigation Vendor Advisory
https://github.com/jmespath/jmespath.php/security/advisories/GHSA-pcw8-m77r-2528	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:jmespath:jmespath:*:*:*:*:*:php:*:*

History

No history.

Information

Published : 2026-06-12 15:16

Updated : 2026-06-17 10:58

NVD link : CVE-2026-54133

Mitre link : CVE-2026-54133

CVE.ORG link : CVE-2026-54133

JSON object : View

Products Affected

jmespath

jmespath

CWE

CWE-20

Improper Input Validation

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-116

Improper Encoding or Escaping of Output

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