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PatchSiren cyber security CVE debrief

CVE-2026-64806 JetBrains CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-23T12:18:36.103Z and has not been modified since then. In JetBrains WebStorm before 2026.2, a high-severity vulnerability (CVSS score of 8.4) allows for arbitrary code execution before granting project trust via the configured Node.js interpreter. This vulnerability could potentially allow attackers to execute malicious code within the development environment, which could lead to further exploitation. The vulnerability is particularly concerning because it can be exploited before project trust is granted, which means an attacker could potentially exploit this vulnerability before the project is fully trusted. Defenders should verify the Node.js interpreter configurations and review project trust settings to ensure they align with organizational security policies. Additionally, defenders should be aware of potential security risks associated with the arbitrary code execution and take necessary precautions to mitigate them. It is recommended that administrators and users of JetBrains WebStorm before version 2026.2 take necessary actions to update or mitigate the risk.

Vendor
JetBrains
Product
WebStorm
CVSS
HIGH 8.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-23
Original CVE updated
2026-07-28
Advisory published
2026-07-23
Advisory updated
2026-07-28

Who should care

Administrators and users of JetBrains WebStorm before version 2026.2 should be aware of this vulnerability and take necessary actions to update or mitigate the risk. This includes reviewing and updating Node.js interpreter configurations, ensuring project trust is only granted to trusted sources, and monitoring for potential security risks associated with the arbitrary code execution vulnerability. Additionally, security teams and vulnerability management teams should be aware of this vulnerability and prioritize updating JetBrains WebStorm to version 2026.2.1 or later to address the arbitrary code execution vulnerability.

Technical summary

In JetBrains WebStorm before 2026.2, a high-severity vulnerability (CVSS score of 8.4) allows for arbitrary code execution before granting project trust via the configured Node.js interpreter. This vulnerability could potentially allow attackers to execute malicious code within the development environment, which could lead to further exploitation. The vulnerability is particularly concerning because it can be exploited before project trust is granted, which means an attacker could potentially exploit this vulnerability before the project is fully trusted. Administrators and users of JetBrains WebStorm before version 2026.2 should be aware of this vulnerability and take necessary actions to update or mitigate the risk.

Defensive priority

Administrators should prioritize updating JetBrains WebStorm to version 2026.2.1 or later to address the arbitrary code execution vulnerability.

Recommended defensive actions

  • Update JetBrains WebStorm to version 2026.2.1 or later
  • Grant project trust only to trusted sources
  • Monitor Node.js interpreter configurations for potential security risks

Evidence notes

The CVE record indicates that in JetBrains WebStorm before 2026.2, arbitrary code execution was possible before granting project trust via the configured Node.js interpreter. The CVSS score is 8.4, indicating a high severity vulnerability. However, details about the specific conditions or vectors that lead to this vulnerability are limited. Defenders should verify the Node.js interpreter configurations and review project trust settings to ensure they align with organizational security policies. Additionally, defenders should be aware of potential security risks associated with the arbitrary code execution and take necessary precautions to mitigate them.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-23T12:18:36.103Z and has not been modified since then.