Review reviewHigh
CVE-2026-64807
JetBrains WebStorm, webstorm
In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter configuration
- CVSS
- 7.8
- EPSS
- - - percentile
- CISA KEV
- Not listed
- Published
- 2026.07.23
Review review
The CVSS severity warrants an early asset and exposure review.
Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8
Vulnerability overview
In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter configuration
Affected product and versions
- Product
- JetBrains WebStorm, webstorm
- Affected versions
- < 2026.2, < 2026.2.0
- Fixed versions
- 2026.2.0
Recommended response sequence
Confirm exposure before applying a vendor-supported change.
- 1Identify
Confirm that JetBrains WebStorm, webstorm and an affected version are present.
- 2Prioritize
Combine exploitation signals with asset exposure and business criticality.
- 3Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
- 4Verify
Recheck the version, service health, access paths, and relevant logs.
Technical data
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CWE
- CWE-829