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PatchSiren cyber security CVE debrief

CVE-2026-75058 JetBrains CVE debrief

A vulnerability in JetBrains IntelliJ IDEA before version 2026.2.1 allows for XXE (XML External Entity) attacks when importing Eclipse settings. This issue, tracked as CVE-2026-75058, has a CVSS score of 5.5 and is classified as medium severity. The vulnerability was published on August 17, 2026, and was last modified on September 11, 2026. Defenders responsible for JetBrains IntelliJ IDEA deployments should assess exposure to this vulnerability and prioritize verification and remediation efforts. The CVE record and NVD entry provide details about the vulnerability, including its CVSS score and affected versions.

Vendor
JetBrains
Product
IntelliJ IDEA
CVSS
MEDIUM 5.5
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 responsible for JetBrains IntelliJ IDEA deployments should assess exposure to this vulnerability and prioritize verification and remediation efforts.

Why it matters

CVE-2026-75058 is a medium-severity vulnerability in JetBrains IntelliJ IDEA that allows for XXE attacks when importing Eclipse settings. Defenders should prioritize verifying exposure and assessing potential impact on their systems.

  • Potential for XXE attacks on IntelliJ IDEA deployments
  • Need for verification of IntelliJ IDEA version and exposure
  • Potential impact on systems importing Eclipse settings

Technical summary

The vulnerability allows for XXE attacks when importing Eclipse settings in JetBrains IntelliJ IDEA before version 2026.2.1. The CVSS score for this vulnerability is 5.5, indicating medium severity. This issue arises from the improper handling of XML external entities during the import process, which could lead to potential security breaches. Defenders should prioritize verifying exposure of IntelliJ IDEA deployments to this vulnerability and assessing the potential impact of XXE attacks on their systems.

Defensive priority

Defenders should prioritize verifying exposure of IntelliJ IDEA deployments to this vulnerability and assessing the potential impact of XXE attacks on their systems.

Recommended defensive actions

  • Verify IntelliJ IDEA version and ensure it is updated to 2026.2.1 or later
  • Assess exposure of IntelliJ IDEA deployments to this vulnerability
  • Review Eclipse settings importers for potential XXE attacks

Evidence notes

The CVE record and NVD entry provide details about the vulnerability, including its CVSS score and affected versions. However, additional information about potential exploitation or impact is limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-75058 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-75058

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

  • CVE-2026-75058 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-75058

    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.