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CVE-2026-75054 JetBrains CVE debrief

CVE-2026-75054 is a medium-severity vulnerability in JetBrains IntelliJ IDEA, allowing sSRF via the OpenAPI preview proxy in untrusted projects. The vulnerability's impact is limited to untrusted projects, and there is no evidence of exploitation. Defenders managing IntelliJ IDEA deployments, especially those with untrusted projects, should assess exposure and prioritize updates to version 2026.2.1 or later. This vulnerability was reported via [email protected] and affects product versions before 2026.2.1.

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 managing JetBrains IntelliJ IDEA deployments, especially those with untrusted projects, should assess exposure and prioritize updates.

Why it matters

CVE-2026-75054 is a medium-severity vulnerability in JetBrains IntelliJ IDEA, allowing sSRF via the OpenAPI preview proxy in untrusted projects. Defenders managing IntelliJ IDEA deployments, especially those with untrusted projects, should assess exposure and prioritize updates to version 2026.2.1 or later. The vulnerability's impact is limited to untrusted projects, and there is no evidence of exploitation. However, defenders should still verify exposure, monitor for suspicious activity, and update to the latest version.

  • Potential sSRF exploitation in untrusted projects
  • Need to verify exposure and update to version 2026.2.1 or later
  • Monitoring for suspicious activity is recommended

Technical summary

CVE-2026-75054 is a vulnerability in JetBrains IntelliJ IDEA before version 2026.2.1, allowing sSRF via the OpenAPI preview proxy in untrusted projects. This vulnerability affects IntelliJ IDEA deployments with untrusted projects and can be mitigated by updating to version 2026.2.1 or later. Defenders should prioritize verifying exposure in untrusted projects and updating to the latest version.

Defensive priority

Defenders should prioritize verifying exposure in untrusted projects and updating to version 2026.2.1 or later.

Recommended defensive actions

  • Verify exposure in untrusted projects
  • Update to version 2026.2.1 or later
  • Monitor for suspicious activity

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but vendor advisory information is limited. The CVE Program and NVD provide source-grounded information on CVE-2026-75054. Additional information from vendor sources may be necessary to fully understand the vulnerability's impact and mitigations. Defenders should verify exposure in untrusted projects and review official advisories for further guidance.

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.