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PatchSiren cyber security CVE debrief

CVE-2026-64809 JetBrains CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-23T12:18:36.437Z and has not been modified since then. In JetBrains PhpStorm before 2026.2, arbitrary code execution was possible before granting project trust via the configured interpreter. This vulnerability has a CVSS score of 8.4, indicating high severity. The affected product is PhpStorm, and users should update to version 2026.2.1 or later to address this issue. Evidence is limited to CVE and NVD details. Defenders should verify project trust settings, review configured interpreter usage, and monitor for suspicious activity in PhpStorm projects. Confirm whether affected PhpStorm deployments exist in managed environments and assign an owner for follow-up. Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Vendor
JetBrains
Product
PhpStorm
CVSS
HIGH 8.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-23
Original CVE updated
2026-07-28
Advisory published
2026-07-23
Advisory updated
2026-07-28

Who should care

PhpStorm users, particularly those who use the configured interpreter feature, should be aware of this vulnerability and take steps to update their software and review project trust settings. Operators, platform administrators, vulnerability management teams, and security teams should prioritize updating PhpStorm to version 2026.2.1 or later.

Technical summary

In JetBrains PhpStorm before 2026.2, arbitrary code execution was possible before granting project trust via the configured interpreter. This vulnerability has a CVSS score of 8.4, indicating high severity. Users should update to version 2026.2.1 or later to address this issue. Affected product context indicates PhpStorm users are impacted.

Defensive priority

PhpStorm users should prioritize updating to version 2026.2.1 or later to address the arbitrary code execution vulnerability.

Recommended defensive actions

  • Update PhpStorm to version 2026.2.1 or later
  • Review project trust settings and configured interpreter
  • Monitor for suspicious activity in PhpStorm projects
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record indicates that in JetBrains PhpStorm before 2026.2, arbitrary code execution was possible before granting project trust via the configured interpreter. The CVSS score is 8.4, indicating a high severity vulnerability. Evidence is limited to CVE and NVD details. Defenders should verify project trust settings, review configured interpreter usage, and monitor for suspicious activity in PhpStorm projects.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-64809 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-64809

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-64809 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-64809

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.