CVE-2026-123847 · Package
NO FIX YET · SEE WHAT TO DO
Before IntelliJ IDEA 2026.3, control characters in terminal command completion could cause command execution. An attacker who can supply crafted completion input may get a command run on the developer's machine.
first public Nov 6, 2026 · 1 source
Check it with your coding agent
It checks your repository and tells you if you’re affected, with the fix.
Developers running IntelliJ IDEA versions before 2026.3 who use the integrated terminal and its command completion. The sources do not say what input an attacker needs to supply or whether a default setup is affected.
Not affected if version-2026.3-or-later
Who cares developer-tools, intellij-idea, jetbrains
2026.3 are listed as affected.2026.3 or later (the sources name this version as the first fixed release).In JetBrains IntelliJ IDEA before 2026.3 command execution was possible via control characters in terminal command completion
This page as .md · .json · CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Are you affected?
Tell InfraStack what you run. It checks this one, and every next one, against your stack.
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.