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CVE-2026-75054 JetBrains CVE debrief

CVE-2026-75054 debrief: JetBrains IntelliJ IDEA OpenAPI preview proxy sSRF vulnerability allows unauthorized access via untrusted projects, requiring defenders to assess exposure and verify vendor remediation for potential internal resource access and system impacts. This medium-severity vulnerability affects JetBrains IntelliJ IDEA before 2026.2.1, with limited information available from official sources. Defenders should prioritize verifying vendor remediation and assessing exposure in untrusted projects.

Vendor
JetBrains
Product
IntelliJ IDEA
CVSS
MEDIUM 6.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-17
Original CVE updated
2026-09-11
Advisory published
2026-08-17
Advisory updated
2026-09-11

Who should care

Defenders of JetBrains IntelliJ IDEA deployments, especially those using untrusted projects, should assess exposure and verify vendor remediation.

Why it matters

CVE-2026-75054 is a medium-severity sSRF vulnerability in JetBrains IntelliJ IDEA before 2026.2.1, affecting untrusted projects via the OpenAPI preview proxy. Defenders should assess exposure, verify vendor remediation, and monitor for suspicious activity.

  • Potential unauthorized access to internal resources
  • Need to verify vendor remediation and affected versions
  • Possible impact on systems with untrusted projects
  • Requires inventory checks for affected systems

Technical summary

CVE-2026-75054 is a server-side request forgery (sSRF) vulnerability in JetBrains IntelliJ IDEA before 2026.2.1, exploitable via the OpenAPI preview proxy in untrusted projects, potentially allowing unauthorized access to internal resources. The vulnerability has a medium severity and defenders should assess exposure and verify vendor remediation to mitigate potential impacts.

Defensive priority

Assess exposure in untrusted projects, verify vendor remediation

Recommended defensive actions

  • Assess exposure in untrusted projects
  • Verify vendor remediation
  • Inventory affected systems
  • Monitor for suspicious activity

Evidence notes

Official CVE Program record and NVD vulnerability detail page provide limited information on CVE-2026-75054, a server-side request forgery (sSRF) vulnerability in JetBrains IntelliJ IDEA before 2026.2.1.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-75054 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-75054

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

  • CVE-2026-75054 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-75054

    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.