{"id":"CVE-2026-27646","aliases":["EUVD-2026-14557","GHSA-9q36-67vc-rrwg"],"status":"published","title":"OpenClaw \u003c 2026.3.7 - Sandbox Escape via /acp spawn Command","description":"OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-command to cross from sandboxed chat context into host-side ACP session initialization when ACP is enabled.","severity":{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0011,"percentile":0.01297,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-284","CWE-693","CWE-863"],"published":"2026-03-09T19:54:54Z","modified":"2026-10-28T02:30:40Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.3.7"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2026.3.2"},{"fixed":"2026.3.7"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.7"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-9q36-67vc-rrwg","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/61000b8e4ded919ca1a825d4700db4cb3fdc56e3","tags":["patch","Patch","fix","web"]},{"url":"https://vulncheck.com/advisories/openclaw-mar-sandbox-escape-via-acp-spawn-command","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/releases/tag/v2026.3.7","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27646","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9q36-67vc-rrwg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27646.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-27646","title":"OpenClaw \u003c 2026.3.7 - Sandbox Escape via /acp spawn Command","description":"OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-command to cross from sandboxed chat context into host-side ACP session initialization when ACP is enabled.","status":"published","published":"2026-03-23T21:36:00.626Z","modified":"2026-07-14T18:39:37.626Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:19:48.461833Z"}],"euvd":[{"id":"EUVD-2026-14557","description":"OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-command to cross from sandboxed chat context into host-side ACP session initialization when ACP is enabled.","status":"published","published":"2026-03-23T21:36:00Z","modified":"2026-07-14T18:39:37Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:19:59.200665Z"}],"ghsa":[{"id":"GHSA-9q36-67vc-rrwg","title":"OpenClaw: Sandboxed /acp spawn requests could initialize host ACP sessions","description":"### Summary\nSandboxed requester sessions could reach host-side ACP session initialization through `/acp spawn`.\n\nOpenClaw already blocked `sessions_spawn({ runtime: \"acp\" })` from sandboxed sessions, but the slash-command path initialized ACP directly without applying the same host-runtime guard first.\n\n### Affected Packages / Versions\n- npm package: `openclaw`\n- Affected versions: `\u003c= 2026.3.2`\n- Patched version: `\u003e= 2026.3.7`\n\n### Details\nACP sessions run on the host, not inside the OpenClaw sandbox. The direct ACP spawn path in `src/agents/acp-spawn.ts` already denied sandboxed requesters, but `/acp spawn` in `src/auto-reply/reply/commands-acp/lifecycle.ts` called `initializeSession(...)` without first applying the same restriction.\n\nIn affected versions, an already authorized sender in a sandboxed session could use `/acp spawn` to cross from sandboxed chat context into host-side ACP runtime initialization when ACP was enabled and a backend was available.\n\n### Fix Commit(s)\n- `61000b8e4ded919ca1a825d4700db4cb3fdc56e3`\n\n### Fix Details\nThe fix introduced a shared ACP runtime-policy guard in `src/agents/acp-spawn.ts` and reused it from the `/acp spawn` handler in `src/auto-reply/reply/commands-acp/lifecycle.ts` before any ACP backend initialization. Regression coverage was added in `src/auto-reply/reply/commands-acp.test.ts` to prove sandboxed `/acp spawn` requests are rejected early, while existing ACP spawn behavior for non-sandboxed sessions remains unchanged.\n\n### Release Process Note\nPatched version is pre-set to `2026.3.7` so the advisory can be published once that npm release is available.\n\nThanks @tdjackey for reporting.","status":"published","published":"2026-03-09T19:54:54Z","modified":"2026-03-30T13:31:03Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","level":"medium"}],"cwes":["CWE-284","CWE-693","CWE-863"],"updated_at":"2026-11-02T14:39:44.97342Z"}],"nvd":[{"id":"CVE-2026-27646","description":"OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-command to cross from sandboxed chat context into host-side ACP session initialization when ACP is enabled.","status":"published","published":"2026-03-23T22:16:25.66Z","modified":"2026-06-17T10:27:27.133Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/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":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:10.568062Z"}],"osv":[{"id":"CVE-2026-27646","title":"OpenClaw \u003c 2026.3.7 - Sandbox Escape via /acp spawn Command","description":"OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-command to cross from sandboxed chat context into host-side ACP session initialization when ACP is enabled.","status":"published","published":"2026-03-23T21:36:00.626Z","modified":"2026-10-28T02:30:40.738965872Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:45:00.180685Z"},{"id":"GHSA-9q36-67vc-rrwg","title":"OpenClaw: Sandboxed /acp spawn requests could initialize host ACP sessions","description":"### Summary\nSandboxed requester sessions could reach host-side ACP session initialization through `/acp spawn`.\n\nOpenClaw already blocked `sessions_spawn({ runtime: \"acp\" })` from sandboxed sessions, but the slash-command path initialized ACP directly without applying the same host-runtime guard first.\n\n### Affected Packages / Versions\n- npm package: `openclaw`\n- Affected versions: `\u003c= 2026.3.2`\n- Patched version: `\u003e= 2026.3.7`\n\n### Details\nACP sessions run on the host, not inside the OpenClaw sandbox. The direct ACP spawn path in `src/agents/acp-spawn.ts` already denied sandboxed requesters, but `/acp spawn` in `src/auto-reply/reply/commands-acp/lifecycle.ts` called `initializeSession(...)` without first applying the same restriction.\n\nIn affected versions, an already authorized sender in a sandboxed session could use `/acp spawn` to cross from sandboxed chat context into host-side ACP runtime initialization when ACP was enabled and a backend was available.\n\n### Fix Commit(s)\n- `61000b8e4ded919ca1a825d4700db4cb3fdc56e3`\n\n### Fix Details\nThe fix introduced a shared ACP runtime-policy guard in `src/agents/acp-spawn.ts` and reused it from the `/acp spawn` handler in `src/auto-reply/reply/commands-acp/lifecycle.ts` before any ACP backend initialization. Regression coverage was added in `src/auto-reply/reply/commands-acp.test.ts` to prove sandboxed `/acp spawn` requests are rejected early, while existing ACP spawn behavior for non-sandboxed sessions remains unchanged.\n\n### Release Process Note\nPatched version is pre-set to `2026.3.7` so the advisory can be published once that npm release is available.\n\nThanks @tdjackey for reporting.","status":"published","published":"2026-03-09T19:54:54Z","modified":"2026-03-30T13:49:34.874074Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","level":"medium"},{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-284","CWE-693","CWE-863"],"updated_at":"2026-11-02T15:46:44.225359Z"}]}}