CVE-2026-64809 in PhpStorm
Summary
by MITRE • 07/23/2026
In JetBrains PhpStorm before 2026.2 arbitrary code execution was possible before granting project trust via the configured interpreter
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Analysis
by VulDB Data Team • 07/23/2026
This vulnerability in JetBrains PhpStorm versions prior to 2026.2 represents a critical security flaw that allowed attackers to execute arbitrary code without requiring explicit project trust verification. The issue stems from insufficient validation mechanisms within the IDE's interpreter configuration handling process, where untrusted code could be executed during the initial setup or modification of interpreter settings. The vulnerability specifically affects the way PhpStorm processes and validates interpreter paths, allowing malicious actors to inject and execute unauthorized code sequences through crafted interpreter configurations. This represents a direct violation of the principle of least privilege and demonstrates a failure in the software's input sanitization and execution control mechanisms.
The technical exploitation occurs when an attacker configures a malicious interpreter path that contains executable code or references to external payloads. The IDE's interpreter validation process fails to properly isolate or sanitize these configurations, creating a pathway for arbitrary code execution. This vulnerability is particularly dangerous because it operates before the normal trust verification mechanisms are activated, meaning users can be compromised even during initial project setup or interpreter configuration phases. The flaw essentially creates a backdoor execution channel that bypasses standard security controls and validation procedures.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise potential. Attackers could leverage this vulnerability to install persistent malware, exfiltrate sensitive data, or establish unauthorized access points within development environments. The attack surface is particularly concerning in enterprise settings where multiple developers may interact with potentially compromised projects or where shared development resources are utilized. This vulnerability affects the integrity of the entire development workflow and can lead to supply chain compromises when trusted development tools are involved.
Mitigation strategies should focus on immediate software updates to version 2026.2 or later, which contain proper input validation and execution control mechanisms. Organizations should implement strict access controls for interpreter configuration settings and establish monitoring procedures for suspicious code execution patterns. Security teams should also conduct comprehensive audits of existing PhpStorm installations to identify any potential exploitation attempts. The vulnerability aligns with CWE-78 and CWE-94 categories related to command injection and code execution flaws, and may map to ATT&CK techniques involving privilege escalation and execution through development tools. Regular security assessments of integrated development environments are essential to prevent similar vulnerabilities from emerging in other software applications.