Quick answers
- Is CVE-2026-64807 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-64807 being exploited in the wild.
- How severe is CVE-2026-64807?
- High severity, with a CVSS score of 7.8, published 23 July 2026.
- Which products and versions are affected?
- Jetbrains WebStorm before 2026.2.
- Is there a fix for CVE-2026-64807?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-64807 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-64807?
- Check whether you run Jetbrains WebStorm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability classified as 'Inclusion of Functionality from Untrusted Control Sphere' (CWE-829) exists in JetBrains WebStorm versions prior to 2026.2. The issue stems from the IDE improperly handling linter configuration files provided within a project directory. An attacker can exploit this by tricking a user into opening a malicious project containing a crafted linter config, leading to arbitrary code execution with the privileges of the IDE user. The attack requires local access to the project files and user interaction (opening the project). The issue has been addressed in WebStorm version 2026.2.
Affected products
- JetBrains WebStorm before 2026.2
Timeline
- 2026-07-23: disclosed
- 2026-07-23: advisory