CVE-2026-53914
Medium
Description
In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata
SeverityMedium
CVSS6.7
Exploit probability—
Product
Jetbrains Kotlin
PublishedJun 26, 2026
First seenJun 26, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Update
- jetbrains kotlin2.4.20 or later
- org.jetbrains.kotlin:kotlin-gradle-plugin2.4.20-Beta1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| jetbrains kotlin | v < 2.4.20 | 2.4.20 |
| org.jetbrains.kotlin:kotlin-gradle-pluginMaven | v < 2.4.20-Beta1 | 2.4.20-Beta1 |
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