CVE-2026-64807: In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter config

Q: How do I fix CVE-2026-64807?

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

Q: Is CVE-2026-64807 being exploited?

CVE-2026-64807 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-2026-64807 affect?

CVE-2026-64807 affects webstorm. Severity is high (CVSS 7.8). In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter configuration

Routine

HIGH 7.8UPGRADE

CVE-2026-64807 is a high-severity flaw (CVSS 7.8) 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 via a project-supplied linter configuration

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
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-2026-64807?

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

Is CVE-2026-64807 being exploited?

CVE-2026-64807 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-2026-64807 affect?

CVE-2026-64807 affects webstorm. Severity is high (CVSS 7.8). In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter configuration

How urgent is CVE-2026-64807?

Priority 29/100. High severity

Related CVEs

CVE-2026-64804 HIGH 8.4 UPGRADE In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via pr
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

References

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