Arbitrary File Write Vulnerability in JetBrains IntelliJ IDEA
CVE-2026-123842

7.1HIGH

Key Information:

Vendor

Jetbrains
Status
Intellij Idea
Vendor
CVE Published:
6 November 2026

What is CVE-2026-123842?

An issue in JetBrains IntelliJ IDEA prior to version 2026.3 allows for arbitrary file writing through symlink manipulation when extracting plugin archives. This vulnerability could facilitate unauthorized file modifications, raising significant concerns for data integrity and security within affected systems.

Affected Version(s)

IntelliJ IDEA 0 < 2026.3

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.