CVE-2026-64804: In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via pr

Q: How do I fix CVE-2026-64804?

webstorm: upgrade to 2026.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-64804 being exploited?

CVE-2026-64804 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-64804 affect?

CVE-2026-64804 affects webstorm. Severity is high (CVSS 8.4). In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling

Routine

HIGH 8.4UPGRADE

CVE-2026-64804 is a high-severity flaw (CVSS 8.4) affecting webstorm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-829
Published	2026-07-23
Last modified	2026-10-24

Publisher (CNA): JetBrains s.r.o. · Vendor: jetbrains

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-23 12:18 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

jetbrains webstorm UPGRADE

Affected: < 2026.2.0

Fixed in: 2026.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webstorm || rpm -q webstorm || webstorm --version

2. UPGRADE to 2026.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webstorm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webstorm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-64804?

webstorm: upgrade to 2026.2.0. Exact commands for each OS are on this page.

Is CVE-2026-64804 being exploited?

CVE-2026-64804 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-64804 affect?

CVE-2026-64804 affects webstorm. Severity is high (CVSS 8.4). In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling

How urgent is CVE-2026-64804?

Priority 31/100. High severity

Related CVEs

CVE-2026-64805 HIGH 8.4 UPGRADE In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via pr
CVE-2026-64806 HIGH 8.4 UPGRADE In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via th
CVE-2026-64807 HIGH 7.8 UPGRADE In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter config

References

← Back to latest CVEs