CVE-2026-122235
Medium
Description
Jan from 0.8.5 before 0.8.8 contains a workspace guard bypass vulnerability in the agent-tools gate.rs that allows attackers to write files outside the workspace via dangling symlinks. Attackers supplying a malicious repository can use prompt injection to make the write or edit tools follow symlinks, creating files like ~/.ssh/authorized_keys on the host.
SeverityMedium
CVSS4.7
Exploit probability—
ProductJan
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-59Improper link resolution
How to fix
Update
- janhq jan0.8.8 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| janhq jan | 0.8.5 ≤ v < 0.8.8 | 0.8.8 |
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