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Vulnerability record · CVE-2026-85690 · published 4 September 2026

CVE-2026-85690: Path traversal vulnerability

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.

8.5 CVSS 4.0 High EPSS 0.20% · top 90.9% CWE-22 · Path traversal Deferred
8.5CVSS 4.0 base score
0.20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
23 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/plandex-ai/plandex
https://github.com/plandex-ai/plandex/blob/cli/v2.2.1/app/cli/lib/apply.go
https://github.com/plandex-ai/plandex/issues/352
https://www.vulncheck.com/advisories/plandex-2.2.1-path-traversal-via-applyfiles

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Source: NIST National Vulnerability Database (record CVE-2026-85690), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.