Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-fg3m-vhrr-8gj6
Advisory ID github_osv/GHSA-fg3m-vhrr-8gj6
Aliases CVE-2026-31995
Summary OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path ### Summary On Windows, the Lobster extension previously retried certain spawn failures (`ENOENT`/`EINVAL`) with `shell: true` for wrapper compatibility. In that fallback path, tool-provided arguments could be interpreted by `cmd.exe` if fallback was triggered. ### Affected Packages / Versions - Package: `openclaw` (npm) - Latest published version at triage: `2026.2.17` - Affected range: `>= 2026.1.21 <= 2026.2.17` - Patched version: `2026.2.19` (pre-set for next release) ### Fix The Windows shell fallback was removed. Wrapper compatibility is preserved by resolving `.cmd`/`.bat` shims to a concrete Node entrypoint (or executable) and executing with explicit argv (no shell). If a safe entrypoint cannot be resolved, execution now fails closed with a guided error. ### Fix Commit(s) - `ba7be018da354ea9f803ed356d20464df0437916` ### Severity Context This issue requires Windows plus fallback-triggering conditions, and argument control through a local operator-defined workflow. OpenClaw thanks @tdjackey for reporting.
Status Published
Exploitability 0.5
Weighted Severity 4.6
Risk 2.3
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
System Score Found at
cvssv4 5.1 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-fg3m-vhrr-8gj6/GHSA-fg3m-vhrr-8gj6.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/openclaw/openclaw
ba7be018da354ea9f803ed356d20464df0437916 Other https://github.com/openclaw/openclaw/commit/ba7be018da354ea9f803ed356d20464df0437916
CVE-2026-31995 https://nvd.nist.gov/vuln/detail/CVE-2026-31995
GHSA-fg3m-vhrr-8gj6 Advisory https://github.com/openclaw/openclaw/security/advisories/GHSA-fg3m-vhrr-8gj6
openclaw-command-injection-via-windows-shell-fallback-in-lobster-extension Advisory https://www.vulncheck.com/advisories/openclaw-command-injection-via-windows-shell-fallback-in-lobster-extension
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-fg3m-vhrr-8gj6/GHSA-fg3m-vhrr-8gj6.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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present

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passive

active

high

low

none

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low

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low

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low

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There are no SSVC decisions available.