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CVE-2026-33581

OpenClaw < 2026.3.24 - Arbitrary File Read via mediaUrl and fileUrl Parameters

7.1 HighFix available

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.58%Up 0.5 points since Apr 1, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.1

OpenClaw < 2026.3.24 - Arbitrary File Read via mediaUrl and fileUrl Parameters

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Record
CVE-2026-33581
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-17441 7.1

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Record
EUVD-2026-17441
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-3gr8-2752-h46q 7.1

Duplicate Advisory: OpenClaw's message tool media parameter bypasses tool policy filesystem isolation

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-v8wv-jg3q-qwpq. This link is maintained to preserve external references.

Original Description

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Record
GHSA-3gr8-2752-h46q
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
GitHub AdvisoriesGHSA-v8wv-jg3q-qwpq 7.1

OpenClaw's message tool media parameter bypasses tool policy filesystem isolation

Summary

The message tool accepted mediaUrl and fileUrl aliases without applying the same sandbox localRoots validation as the canonical media path handling.

Impact

A caller constrained to sandbox media roots could read arbitrary local files by routing them through the alias parameters.

Affected Component

src/infra/outbound/message-action-params.ts, src/infra/outbound/message-action-runner.ts

Fixed Versions

  • Affected: < 2026.3.24
  • Patched: >= 2026.3.24
  • Latest stable 2026.3.28 contains the fix.

Fix

Fixed by commit 1d7cb6fc03 (fix: close sandbox media root bypass for mediaUrl/fileUrl aliases).

OpenClaw thanks @AntAISecurityLab for reporting.

Record
GHSA-v8wv-jg3q-qwpq
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
NVD 7.1

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Record
CVE-2026-33581
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 7.1

OpenClaw < 2026.3.24 - Arbitrary File Read via mediaUrl and fileUrl Parameters

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Record
CVE-2026-33581
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-3gr8-2752-h46q 7.1

Duplicate Advisory: OpenClaw's message tool media parameter bypasses tool policy filesystem isolation

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-v8wv-jg3q-qwpq. This link is maintained to preserve external references.

Original Description

OpenClaw before 2026.3.24 contains a sandbox bypass vulnerability in the message tool that allows attackers to read arbitrary local files by using mediaUrl and fileUrl alias parameters that bypass localRoots validation. Remote attackers can exploit this by routing file requests through unvalidated alias parameters to access files outside the intended sandbox directory.

Record
GHSA-3gr8-2752-h46q
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-v8wv-jg3q-qwpq 7.1

OpenClaw's message tool media parameter bypasses tool policy filesystem isolation

Summary

The message tool accepted mediaUrl and fileUrl aliases without applying the same sandbox localRoots validation as the canonical media path handling.

Impact

A caller constrained to sandbox media roots could read arbitrary local files by routing them through the alias parameters.

Affected Component

src/infra/outbound/message-action-params.ts, src/infra/outbound/message-action-runner.ts

Fixed Versions

  • Affected: < 2026.3.24
  • Patched: >= 2026.3.24
  • Latest stable 2026.3.28 contains the fix.

Fix

Fixed by commit 1d7cb6fc03 (fix: close sandbox media root bypass for mediaUrl/fileUrl aliases).

OpenClaw thanks @AntAISecurityLab for reporting.

Record
GHSA-v8wv-jg3q-qwpq
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 before 2026.3.24
2026.3.24

History

History
RecordedChangedSources
affected
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-33581 is a high vulnerability (CVSS 7.1) in Openclaw, published March 31, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 47th percentile. Fixed in openclaw 2026.3.24.

References

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