{"id":"GHSA-9q36-67vc-rrwg","summary":"OpenClaw: Sandboxed /acp spawn requests could initialize host ACP sessions","details":"### 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.","aliases":["CVE-2026-27646"],"modified":"2026-03-30T13:49:34.874074Z","published":"2026-03-09T19:54:54Z","database_specific":{"cwe_ids":["CWE-284","CWE-693","CWE-863"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-09T19:54:54Z","nvd_published_at":"2026-03-23T22:16:25Z"},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-9q36-67vc-rrwg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27646"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/61000b8e4ded919ca1a825d4700db4cb3fdc56e3"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.3.7"},{"type":"WEB","url":"https://vulncheck.com/advisories/openclaw-mar-sandbox-escape-via-acp-spawn-command"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.7"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-9q36-67vc-rrwg/GHSA-9q36-67vc-rrwg.json","last_known_affected_version_range":"\u003c= 2026.3.2"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"},{"type":"CVSS_V4","score":"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"}]}