- CVSS
- MEDIUM · 4.7v3.1CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
- Published
- 2026-10-10
- Weakness
- CWE-59
- Source
- nvd.nist.gov/vuln/detail/CVE-2026-108599
Description
phi 0.1.1 through 0.28.4 contains an improper link resolution vulnerability that allows malicious repositories to bypass workspace_only_writes by exploiting lexical-only path checks in the permission gate. Attackers can commit symlinks pointing outside the workspace and use prompt injection to make the write tool write attacker-influenced content to external files without approval.
References
- https://github.com/pulseaiclub/phi
- https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/permission/gate.go#L106-L119
- https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/tools/writetool/write.go#L64-L68
- https://hackmd.io/@haind/phi-symlink-permission-boundary
- https://www.vulncheck.com/advisories/phi-0.1.1-through-0.28.4-symlink-workspace-write-restriction-bypass
How GTK Cyber trains on this
AI security training at GTK Cyber covers the LLM and ML-pipeline vulnerability classes that vulnerabilities like CVE-2026-108599 fall into. Our hands-on courses are taught by Charles Givre and other practitioners who break and defend production AI systems.