Medium

OpenClaw ACP client has permission auto-approval bypass via untrusted tool metadata

  • Disclosed: 27.02.2026
  • Updated: 11.10.2026 10:22

Vulnerability Summary

The OpenClaw ACP client could auto-approve tool calls based on untrusted metadata and permissive name heuristics. A malicious or compromised ACP tool invocation could bypass expected interactive approval prompts for read-class operations.

Affected Packages / Versions

  • Package: npm openclaw
  • Affected published versions: <= 2026.2.22-2 (latest published as of February 24, 2026 is 2026.2.22-2)
  • Patched in code on main: 2026.2.23 (released)

Technical Details

  • Permission classification trusted incoming toolCall.kind and heuristic name matching.
  • Non-core read-like names and spoofed kind metadata could reach auto-approve paths.
  • read operations were not scoped strongly enough to cwd in all metadata/title forms.

Fix

  • Require trusted core tool IDs for auto-approval and ignore untrusted toolCall.kind as an authorization source.
  • Scope read auto-approval to cwd-resolved paths.
  • Add stricter tool-name validation and regression coverage for spoofed kind and non-core read-like names.

Affected Functions

  • resolvePermissionRequest
  • resolveToolNameForPermission
  • shouldAutoApproveToolCall

Fix Commit(s)

  • 12cc754332f9a7c92e158ce7644aa22df79c0904
  • 63dcd28ae0be2de1c75af09cc81841cebeec068f

Found using MCPwner

Thanks @nedlir for reporting.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package openclaw < 2026.2.23 2026.2.23

References

CVSS score 5.4/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE)
CWE-639, CWE-863
Platform
npm
Package
openclaw
Disclosed
27.02.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-7jx5-9fjg-hp4m - CC BY 4.0

Vulnerability history: openclaw

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (589) in the archive
Total entries
589
First → latest
02.2026 10.2026
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 20
  • High 215
  • Medium 300
  • Low 54

Disclosures per year

  1. 2026: 589
Severity:
  1. OpenClaw ACP client has permission auto-approval bypass via untrusted tool metadata this entry
    Medium · 5.4 CVE-2026-32898 < 2026.2.23 2026.2.23
  2. High · 8.8 CVE-2026-53811 < 2026.5.7 2026.5.7
  3. High · 8.8 CVE-2026-53806 < 2026.5.12 2026.5.12
  4. High · 7.8 CVE-2026-53813 < 2026.4.25 2026.4.25
  5. High · 7.5 CVE-2026-53834 < 2026.4.27 2026.4.27
  6. Critical CVE-2026-34507 < 2026.4.29 2026.4.29
  7. High CVE-2026-53823 < 2026.5.3 2026.5.3
  8. High · 8.4 CVE-2026-53814 < 2026.5.20 2026.5.20
  9. High · 6.5 CVE-2026-53815 < 2026.5.19 2026.5.19
  10. High · 8.1 CVE-2026-53849 < 2026.5.7 2026.5.7
  11. High · 8.1 CVE-2026-53857 < 2026.5.3 2026.5.3
  12. High · 8.1 CVE-2026-53866 < 2026.5.12 2026.5.12
  13. High · 8.1 CVE-2026-53864 < 2026.5.26 2026.5.26
  14. Critical · 9.8 CVE-2026-44109 < 2026.4.15 2026.4.15
  15. Critical · 8.1 CVE-2026-43585 < 2026.4.15 2026.4.15
  16. High · 8.8 CVE-2026-43530 >= 2026.2.23, < 2026.4.12 2026.4.12
  17. High · 8.8 CVE-2026-42434 >= 2026.4.5, < 2026.4.10 2026.4.10
  18. High · 7.5 CVE-2026-42437 >= 2026.4.9, < 2026.4.10 2026.4.10
  19. High CVE-2026-41393 < 2026.3.31 2026.3.31
  20. Critical · 8.2 CVE-2026-41296 < 2026.3.31 2026.3.31
  21. High · 8.8 CVE-2026-41352 < 2026.3.31 2026.3.31
  22. High · 7.8 CVE-2026-41396 < 2026.3.31 2026.3.31
Show more (20) Showing 81 of 236

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