Medium

OpenClaw: Webchat media embedding enforces local-root containment for tool-result files

  • Disclosed: 17.04.2026
  • Updated: 11.10.2026 10:22

Summary

Webchat tool-result media normalization could pass local and UNC-style file paths into the host-side media embedding path without applying the configured local-root containment policy.

Impact

A crafted tool-result media reference could cause the host to attempt local file reads or Windows UNC/network path access while preparing webchat media blocks. This could disclose allowed host files or trigger network credential exposure on affected Windows deployments. Severity remains medium because exploitation depends on a tool-result media path reaching the webchat embedding path, but the sink is a host-side file read before the user sees the rendered result.

Affected versions

  • Affected: >= 2026.4.7, < 2026.4.15
  • Patched: 2026.4.15

Fix

OpenClaw 2026.4.15 hardens the webchat media path and the shared media resolver. Remote-host file:// URLs and Windows network paths are rejected before filesystem access, and audio embedding now enforces configured localRoots containment before stat or read operations.

Verified in v2026.4.15:

  • src/gateway/server-methods/chat-webchat-media.ts uses safe file-URL parsing, rejects Windows network paths, and calls assertLocalMediaAllowed before probing local audio files.
  • src/media/web-media.ts rejects remote-host file:// URLs, Windows network paths, and local-root bypasses on the shared media path.
  • src/gateway/server-methods/chat-webchat-media.test.ts covers both remote-host file:// rejection and local-root denial before filesystem access.

Fix commits included in v2026.4.15 and absent from v2026.4.14:

  • 1470de5d3e0970856d86cd99336bb8ada3fe87da via PR #67293
  • 6e58f1f9f54bca1fea1268ec0ee4c01a2af03dde via PR #67298
  • 52ef42302ead9e183e6c8810e0a04ee4ef8ae9fc via PR #67303 as defense-in-depth for trusted media passthrough anchoring

Thanks to @Kherrisan for reporting this issue.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package openclaw >= 2026.4.7, < 2026.4.15 2026.4.15

References

CVSS score 5.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Weakness (CWE)
CWE-22, CWE-73
Platform
npm
Package
openclaw
Disclosed
17.04.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-mr34-9552-qr95 - 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 (588) in the archive
Total entries
588
First → latest
02.2026 07.2026
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 20
  • High 215
  • Medium 299
  • Low 54

Disclosures per year

  1. 2026: 588
Severity:
  1. High · 8.8 CVE-2026-53811 < 2026.5.7 2026.5.7
  2. High · 8.8 CVE-2026-53806 < 2026.5.12 2026.5.12
  3. High · 7.8 CVE-2026-53813 < 2026.4.25 2026.4.25
  4. High · 7.5 CVE-2026-53834 < 2026.4.27 2026.4.27
  5. Critical CVE-2026-34507 < 2026.4.29 2026.4.29
  6. High CVE-2026-53823 < 2026.5.3 2026.5.3
  7. High · 8.4 CVE-2026-53814 < 2026.5.20 2026.5.20
  8. High · 6.5 CVE-2026-53815 < 2026.5.19 2026.5.19
  9. High · 8.1 CVE-2026-53849 < 2026.5.7 2026.5.7
  10. High · 8.1 CVE-2026-53857 < 2026.5.3 2026.5.3
  11. High · 8.1 CVE-2026-53866 < 2026.5.12 2026.5.12
  12. High · 8.1 CVE-2026-53864 < 2026.5.26 2026.5.26
  13. OpenClaw: Webchat media embedding enforces local-root containment for tool-result files this entry
    Medium · 5.8 CVE-2026-41389 >= 2026.4.7, < 2026.4.15 2026.4.15
  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
  23. High · 8.6 CVE-2026-35641 < 2026.3.24 2026.3.24
Show more (20) Showing 100 of 236

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