Jetbrains Kotlin — CVE-2026-53914 (Critical)

Date Jun 26, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product Jetbrains · Kotlin

CVE CVE-2026-53914

Critical vendor advisory CVE-2026-53914

Summary

In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata

Why it matters

This CVE carries a CRITICAL severity rating (CVSS 6.7) in Jetbrains Kotlin. Patch or mitigate promptly. EPSS percentile: 2%.

Operator check

Review CVE-2026-53914 in your asset inventory. Apply patches per vendor guidance and verify Kotlin is not exposed. CVSS score: 6.7. EPSS probability: 0.1%; percentile: 2%.

Sources

NVD — CVE-2026-53914 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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