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

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
JetBrains Kotlin unaffected
Version Status Constraints
0 affected < 2.4.20

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.jetbrains.com/privacy-security/issues-fixed/ cve-icon
History

Fri, 26 Jun 2026 15:00:00 +0000

Type Values Removed Values Added
Title Unsafe Deserialization in Kotlin Build Cache Enables Code Execution

Fri, 26 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 26 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Description In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: JetBrains

Published:

Updated: 2026-06-26T13:44:35.494Z

Reserved: 2026-06-11T13:00:42.498Z

Link: CVE-2026-53914

cve-icon Vulnrichment

Updated: 2026-06-26T13:26:03.768Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-26T14:45:06Z

Weaknesses