CVE-2026-64809

Arbitrary code execution via pre-trust interpreter

Published Jul 23, 2026 · Updated Jul 23, 2026

CWE-829 in JetBrains PhpStorm before 2026.2 allows local users to execute arbitrary code through a configured interpreter before project trust. The IDE invokes a project-configured interpreter before its project-trust boundary has approved the project, importing executable functionality from an untrusted control sphere. A local user must cause a crafted project and its interpreter configuration to be processed; successful execution runs code with the IDE user's privileges.

CVSS severity8.4
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

CWE-829 in JetBrains PhpStorm before 2026.2 allows local users to execute arbitrary code through a configured interpreter before project trust. The IDE invokes a project-configured interpreter before its project-trust boundary has approved the project, importing executable functionality from an untrusted control sphere. A local user must cause a crafted project and its interpreter configuration to be processed; successful execution runs code with the IDE user's privileges.

The record

CVE
CVE-2026-64809
Published
Jul 23, 2026
Updated
Jul 23, 2026
Vendor
JetBrains
Product
PhpStorm
Classifications
CWE-829
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

JetBrains · PhpStormversion=0 <2026.2

Published CVSS scores

8.4JetBrains s.r.o.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo