# CVE-2026-121448: Dockhand before 1.0.54 Path Traversal via Stack Environment Routes

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Finsys / dockhand: ≥ 0; < 1.0.54 (affected, semver); 1.0.54 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 8.3 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-22

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/Finsys/dockhand/security/advisories/GHSA-q2vc-4qcx-2vm6 (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/dockhand-before-1.0.54-path-traversal-via-stack-environment-routes (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121448; retrieved 2026-11-03; source updated 2026-11-03

Revision: 8f2cdc36c360d17c6c5c262c49888917a768b8eaaf098bdab0c7036591674296

Canonical: https://y2.dev/cve/CVE-2026-121448

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