{"id":"CVE-2026-31995","aliases":["EUVD-2026-13029","GHSA-8px5-2gfr-7ph6","GHSA-fg3m-vhrr-8gj6"],"status":"published","title":"OpenClaw 2026.1.21 \u003c 2026.2.19 - Command Injection via Windows Shell Fallback in Lobster Extension","description":"OpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","severity":{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00558,"percentile":0.46947,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-78"],"published":"2026-03-03T23:19:08Z","modified":"2026-10-28T02:31:04Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.19"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2026.1.21"},{"last_affected":"2026.2.17"},{"fixed":"2026.2.19"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"2026.1.21"},{"fixed":"2026.2.19"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-fg3m-vhrr-8gj6","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/ba7be018da354ea9f803ed356d20464df0437916","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-command-injection-via-windows-shell-fallback-in-lobster-extension","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31995","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8px5-2gfr-7ph6"},{"url":"https://github.com/advisories/GHSA-fg3m-vhrr-8gj6"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31995.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-31995","title":"OpenClaw 2026.1.21 \u003c 2026.2.19 - Command Injection via Windows Shell Fallback in Lobster Extension","description":"OpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","status":"published","published":"2026-03-19T01:00:53.469Z","modified":"2026-06-23T16:14:23.305Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:19:50.92611Z"}],"euvd":[{"id":"EUVD-2026-13029","description":"OpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","status":"published","published":"2026-03-19T01:00:53Z","modified":"2026-06-23T16:14:23Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:32.768333Z"}],"ghsa":[{"id":"GHSA-8px5-2gfr-7ph6","title":"Duplicate Advisory: OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-fg3m-vhrr-8gj6. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","status":"withdrawn","published":"2026-03-19T03:30:57Z","modified":"2026-03-19T19:14:10Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"medium"},{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:39:38.524712Z"},{"id":"GHSA-fg3m-vhrr-8gj6","title":"OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path","description":"### Summary\nOn 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.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published version at triage: `2026.2.17`\n- Affected range: `\u003e= 2026.1.21 \u003c= 2026.2.17`\n- Patched version: `2026.2.19` (pre-set for next release)\n\n### Fix\nThe 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.\n\n### Fix Commit(s)\n- `ba7be018da354ea9f803ed356d20464df0437916`\n\n### Severity Context\nThis issue requires Windows plus fallback-triggering conditions, and argument control through a local operator-defined workflow. \n\nOpenClaw thanks @tdjackey for reporting.","status":"published","published":"2026-03-03T23:19:08Z","modified":"2026-03-19T21:24:44Z","cvss":[{"version":"4.0","score":5.1,"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","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:39:38.524712Z"}],"nvd":[{"id":"CVE-2026-31995","description":"OpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","status":"published","published":"2026-03-19T02:16:04.707Z","modified":"2026-06-17T10:34:54.087Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:09.735529Z"}],"osv":[{"id":"CVE-2026-31995","title":"OpenClaw 2026.1.21 \u003c 2026.2.19 - Command Injection via Windows Shell Fallback in Lobster Extension","description":"OpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","status":"published","published":"2026-03-19T01:00:53.469Z","modified":"2026-10-28T02:31:04.637905811Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:45:01.218144Z"},{"id":"GHSA-8px5-2gfr-7ph6","title":"Duplicate Advisory: OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-fg3m-vhrr-8gj6. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions 2026.1.21 prior to 2026.2.19 contain a command injection vulnerability in the Lobster extension's Windows shell fallback mechanism that allows attackers to inject arbitrary commands through tool-provided arguments. When spawn failures trigger shell fallback with shell: true, attackers can exploit cmd.exe command interpretation to execute malicious commands by controlling workflow arguments.","status":"withdrawn","published":"2026-03-19T03:30:57Z","modified":"2026-03-19T19:16:22.328555Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L","level":"medium"},{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:42.78452Z"},{"id":"GHSA-fg3m-vhrr-8gj6","title":"OpenClaw has Windows Lobster shell fallback command injection in constrained fallback path","description":"### Summary\nOn 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.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published version at triage: `2026.2.17`\n- Affected range: `\u003e= 2026.1.21 \u003c= 2026.2.17`\n- Patched version: `2026.2.19` (pre-set for next release)\n\n### Fix\nThe 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.\n\n### Fix Commit(s)\n- `ba7be018da354ea9f803ed356d20464df0437916`\n\n### Severity Context\nThis issue requires Windows plus fallback-triggering conditions, and argument control through a local operator-defined workflow. \n\nOpenClaw thanks @tdjackey for reporting.","status":"published","published":"2026-03-03T23:19:08Z","modified":"2026-03-19T21:41:21.603353Z","cvss":[{"version":"4.0","score":5.1,"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","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:46.39441Z"}]}}