---
id: "CVE-2026-121448"
kind: "vulnerability"
aliases: ["CVE-2026-121448"]
title: "Dockhand: path traversal lets logged-in users read and overwrite secret files"
severity: "high"
cvss: 8.7
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["docker", "dockhand", "package", "self-hosted"]
not_affected_if: ["auth-required", "managed-hosting"]
published_at: "2026-11-03T15:17:37+00:00"
first_seen_at: "2026-11-03T15:22:01+00:00"
updated_at: "2026-11-03T15:22:31+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121448", "first_seen_at": "2026-11-03T15:22:01+00:00"}]
---

# Dockhand: path traversal lets logged-in users read and overwrite secret files

Dockhand before 1.0.54 lets an authenticated user use double-encoded path sequences in a stack name to reach .env files outside the stacks directory. An attacker can read cross-environment secrets, overwrite files in protected directories, or change deployment variables.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Dockhand version against the fixed release `1.0.54`.
- Look for exposed `/api/stacks/[name]/env/raw` requests in web server or proxy logs containing `%252e%252e`.

## Fix

- Dockhand: upgrade to `1.0.54` or later.

## Timeline

- 2026-11-03T15:22:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121448

## Documents

- [advisory] Vendor advisory: github.com https://github.com/Finsys/dockhand/security/advisories/GHSA-q2vc-4qcx-2vm6
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/dockhand-before-1.0.54-path-traversal-via-stack-environment-routes

## From the sources

Dockhand before 1.0.54 contains a path traversal vulnerability that allows authenticated users to read, overwrite, and delete .env files outside the stacks root by double-encoding the stack name. Attackers can send %252e%252e sequences to /api/stacks/[name]/env/raw to disclose cross-environment secrets, write into protected directories, or poison deployment variables.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_