CVE-2026-49484 Code for IBM i: Temporary files are visible to all users
Local attackers can read sensitive files stored in the shared /tmp directory by the Code for IBM i extension during download or edit operations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-49484?
CVE-2026-49484 is a medium-severity vulnerability in codefori vscode-ibmi, published on 12 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Code for IBM i is a Visual Studio Code extension for maintaining and compiling ILE languages on the IBMi platform. Prior to 3.0.1, src/ui/views/objectBrowser.ts stores Object Browser downloads and the edit-save flow content in the shared /tmp directory without reliable cleanup. On systems where /tmp is accessible to other local accounts, file contents remain readable after download or editing operations. This issue is fixed in version 3.0.1.
Which versions are affected by CVE-2026-49484?
How do I fix CVE-2026-49484?
No fix has been published for CVE-2026-49484 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-49484 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49484 exists.
Sources
Also known as GHSA-9869-gm55-mqpq.