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OpenClaw skills-install-download: tar.bz2 extraction bypassed archive safety parity checks (local DoS)

Moderate severity GitHub Reviewed Published Mar 3, 2026 in openclaw/openclaw • Updated Mar 3, 2026

Package

npm openclaw (npm)

Affected versions

<= 2026.3.1

Patched versions

2026.3.2

Description

Summary

The tar.bz2 installer path in src/agents/skills-install-download.ts used shell tar preflight/extract logic that did not share the same hardening guarantees as the centralized archive extractor.

This allowed crafted .tar.bz2 archives to bypass special-entry blocking and extracted-size guardrails enforced on other archive paths, causing local availability impact during skill install.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published at triage time: 2026.3.1
  • Affected range: <= 2026.3.1
  • Patched in: 2026.3.2 (released)

Impact

Local DoS / availability impact when processing untrusted .tar.bz2 skill archives.

Fix Commit(s)

  • 0dbb92dd2bcf9a32379d11c0f11ed016669dae3e

Related advisories

  • Canonical overlap (closed): GHSA-3pj7-x8jr-jvj8
  • Duplicate variant (closed): GHSA-rgr7-g85h-6v82

References

@steipete steipete published to openclaw/openclaw Mar 3, 2026
Published to the GitHub Advisory Database Mar 3, 2026
Reviewed Mar 3, 2026
Last updated Mar 3, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS score

Weaknesses

Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource. Learn more on MITRE.

Improper Handling of Highly Compressed Data (Data Amplification)

The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. Learn more on MITRE.

CVE ID

No known CVE

GHSA ID

GHSA-77hf-7fqf-f227

Source code

Credits

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