Vulnerability · Published Nov 6, 2026 · Assigned by JetBrains
CVE-2026-123305
High 7.5
In plain English
A high-severity security flaw in IntelliJ IDEA from JetBrains. There are no confirmed reports of exploitation so far.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)–no EPSS score yet
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In JetBrains IntelliJ IDEA before 2026.3 path traversal was possible via unpacking Dev Container archives from a remote host
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| JetBrains | IntelliJ IDEA | 0 – before 2026.3 |
Weakness: CWE-23 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H