TI-2026-27674 Aliases CVE-2026-35570 GHSA-m6rx-7pvw-2f73

OpenClaude has Sandbox Bypass via Early-Exit Logic Flaw that Allows Path Traversal

HIGH 72CWE-22Published 2026-04-20 · Updated 2026-04-21

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Versions prior to 0.5.1 have a logic flaw in `bashToolHasPermission()` inside `src/tools/BashTool/bashPermissions.ts`. When the sandbox auto-allow feature is active and no explicit deny rule is configured, the function returns an `allow` result immediately — before the path constraint filter (`checkPathConstraints`) is ever evaluated. This allows commands containing path traversal sequences (e.g., `../../../../../etc/passwd`) to bypass directory restrictions entirely. Version 0.5.1 contains a patch for the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00232 14th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed openclaude (Gitlawb): 0.5.1@gitlawb/openclaude (npm): 0.5.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Gitlawb	openclaude	before 0.5.1	0.5.1	Patch available	CNA
—	@gitlawb/openclaude (npm)	before 0.5.1	0.5.1	Patch available	GHSA-m6rx-7pvw-2f73

openclaude VendorGitlawb Affected before 0.5.1 Fixed in 0.5.1 Patch available CNA
@gitlawb/openclaude (npm) Vendor— Affected before 0.5.1 Fixed in 0.5.1 Patch available GHSA-m6rx-7pvw-2f73

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gitlawb:openclaude::::::::	before 0.5.1	Vulnerable	Gitlawb

cpe:2.3:a:gitlawb:openclaude:*:*:*:*:*:*:*:* Versions before 0.5.1 Vulnerable ·Gitlawb

Remediation

Fix · CNA openclaude (Gitlawb) Fixed in 0.5.1
Fix · GHSA-m6rx-7pvw-2f73 @gitlawb/openclaude (npm) Fixed in 0.5.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-35570
2026-10-03 Alias added: GHSA-m6rx-7pvw-2f73

References

TI-2026-30442 OpenClaude: Sandbox Bypass via Model-Controlled `dangerouslyDisableSandbox` Input CVSS 4.0CRITICAL 9.3
TI-2026-30441 OpenClaude's MCP OAuth Callback: State Check Bypass via error Param Leads to DoS CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences