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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.

PUBLISHED Reserved 2026-02-22 | Published 2026-03-23 | Updated 2026-03-25 | Assigner VulnCheck




MEDIUM: 5.8CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

Default status
unaffected

Any version before 2026.3.7
affected

2026.3.7 (semver)
unaffected

Credits

tdjackey reporter

References

github.com/...enclaw/security/advisories/GHSA-9q36-67vc-rrwg (GitHub Security Advisory (GHSA-9q36-67vc-rrwg)) third-party-advisory

github.com/...ommit/61000b8e4ded919ca1a825d4700db4cb3fdc56e3 (Patch Commit) patch

vulncheck.com/...aw-mar-sandbox-escape-via-acp-spawn-command (VulnCheck Advisory) third-party-advisory

cve.org (CVE-2026-27646)

nvd.nist.gov (CVE-2026-27646)

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