In JetBrains IntelliJ IDEA before 2026.3 dOM-based XSS in the OpenAPI preview error view was possible

Summary

In JetBrains IntelliJ IDEA before 2026.3 dOM-based XSS in the OpenAPI preview error view was possible

Remediation

1. Inventory every JetBrains IntelliJ IDEA deployment, including staging.
2. Upgrade JetBrains IntelliJ IDEA to 2026.3.
3. Confirm the running version after the upgrade.

References

• Referencehttps://www.jetbrains.com/privacy-security/issues-fixed/