Path Traversal in Plandex-Ai Plandex
CVE-2026-85690
Plandex 2.2.1 contains a path traversal vulnerability in the ApplyFiles function that allows attackers to write files outside the project directory. Attackers can influence model output through poisoned repository files or attacker-controlled context to write to arbitrary locations like shell rc or cron files, achieving code execution.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (9.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/plandex-ai/plandex (product)
- github.com/plandex-ai/plandex/blob/cli/v2.2.1/app/cli/lib/apply.go (technical-description)
- github.com/plandex-ai/plandex/issues/352 (issue-tracking)
- www.vulncheck.com/advisories/plandex-2.2.1-path-traversal-via-applyfiles (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85690?
- CVE-2026-85690 is a high-severity vulnerability in Plandex-Ai Plandex, classified under Path Traversal. CVSS score: 7.8/10. Published 2026-09-04.
- How severe is CVE-2026-85690?
- High severity. CVSS v3 base score is 7.8 out of 10.