CVE-2026-53914: CWE-502 in JetBrains Kotlin
In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata
AI Analysis
Technical Summary
CVE-2026-53914 is a deserialization vulnerability in JetBrains Kotlin versions prior to 2.4.20. Unsafe deserialization in the build cache metadata can lead to code execution. The CVSS 3.1 vector indicates the attack requires local access (AV:L), high attack complexity (AC:H), high privileges (PR:H), and no user interaction (UI:N). The vulnerability affects confidentiality (high), integrity (low), and availability (low) with scope changed (S:C). No vendor advisory or patch information is available to confirm remediation status.
Potential Impact
Successful exploitation could allow an attacker with local high privileges to execute arbitrary code via unsafe deserialization in the build cache metadata. This could lead to confidentiality breaches, partial integrity compromise, and limited availability impact. However, exploitation requires significant access and conditions, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to trusted users only and avoid using vulnerable Kotlin versions in untrusted environments.
CVE-2026-53914: CWE-502 in JetBrains Kotlin
Description
In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata
CVSS v3.1
Score 6.7medium
Affected software
pkg:maven/org.jetbrains.kotlin/kotlin-compilerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-53914 is a deserialization vulnerability in JetBrains Kotlin versions prior to 2.4.20. Unsafe deserialization in the build cache metadata can lead to code execution. The CVSS 3.1 vector indicates the attack requires local access (AV:L), high attack complexity (AC:H), high privileges (PR:H), and no user interaction (UI:N). The vulnerability affects confidentiality (high), integrity (low), and availability (low) with scope changed (S:C). No vendor advisory or patch information is available to confirm remediation status.
Potential Impact
Successful exploitation could allow an attacker with local high privileges to execute arbitrary code via unsafe deserialization in the build cache metadata. This could lead to confidentiality breaches, partial integrity compromise, and limited availability impact. However, exploitation requires significant access and conditions, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to trusted users only and avoid using vulnerable Kotlin versions in untrusted environments.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-06-11T13:00:42.498Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3e7d61cef61ccff96cd4ee
Added to database: 06/26/2026, 13:23:45 UTC
Last enriched: 06/26/2026, 13:54:14 UTC
Last updated: 06/26/2026, 14:33:07 UTC
Views: 3
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