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CVE-2026-22171

OpenClaw < 2026.2.19 - Path Traversal in Feishu Media Temporary File Naming

8.8 HighFix available

OpenClaw versions prior to 2026.2.19 contain a path traversal vulnerability in the Feishu media download flow where untrusted media keys are interpolated directly into temporary file paths in extensions/feishu/src/media.ts. An attacker who can control Feishu media key values returned to the client can use traversal segments to escape os.tmpdir() and write arbitrary files within the OpenClaw process permissions.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
Low

Exploit likelihood

0.35%Up 0.3 points since Mar 18, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

OpenClaw < 2026.2.19 - Path Traversal in Feishu Media Temporary File Naming

OpenClaw versions prior to 2026.2.19 contain a path traversal vulnerability in the Feishu media download flow where untrusted media keys are interpolated directly into temporary file paths in extensions/feishu/src/media.ts. An attacker who can control Feishu media key values returned to the client can use traversal segments to escape os.tmpdir() and write arbitrary files within the OpenClaw process permissions.

Record
CVE-2026-22171
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-12714 8.8

OpenClaw versions prior to 2026.2.19 contain a path traversal vulnerability in the Feishu media download flow where untrusted media keys are interpolated directly into temporary file paths in extensions/feishu/src/media.ts. An attacker who can control Feishu media key values returned to the client can use traversal segments to escape os.tmpdir() and write arbitrary files within the OpenClaw process permissions.

Record
EUVD-2026-12714
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-vj3g-5px3-gr46 6.9

OpenClaw vulnerable to path traversal in Feishu media temp-file naming allows writes outside os.tmpdir()

Summary

OpenClaw’s Feishu media download flow used untrusted Feishu media keys (imageKey / fileKey) when building temporary file paths in extensions/feishu/src/media.ts. Because those keys were interpolated directly into temp-file paths, traversal segments could escape the temp directory and redirect writes outside os.tmpdir().

Impact

This is an arbitrary file write issue (within the OpenClaw process file permissions). If an attacker can control Feishu media key values returned to the client (for example via compromised upstream response path), they can influence where downloaded bytes are written.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published npm version at triage: 2026.2.17
  • Affected versions: <= 2026.2.17
  • Fixed version: 2026.2.19

Fix Commit(s)

  • c821099157a9767d4df208c6b12f214946507871
  • cdb00fe2428000e7a08f9b7848784a0049176705
  • ec232a9e2dff60f0e3d7e827a7c868db5254473f

Remediation

The fix removes key-derived temp-file naming and keeps downloads in safe temp locations. Additional hardening isolates SDK writeFile calls in per-download temp directories (mkdtemp) with deterministic cleanup, enforces Feishu key trust-boundary validation, and adds a repository guard test against dynamic path.join(os.tmpdir(), \...${...}`)` patterns in runtime code.

OpenClaw thanks @allsmog for reporting.

Record
GHSA-vj3g-5px3-gr46
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-02
NVD 8.8

OpenClaw versions prior to 2026.2.19 contain a path traversal vulnerability in the Feishu media download flow where untrusted media keys are interpolated directly into temporary file paths in extensions/feishu/src/media.ts. An attacker who can control Feishu media key values returned to the client can use traversal segments to escape os.tmpdir() and write arbitrary files within the OpenClaw process permissions.

Record
CVE-2026-22171
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/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
8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 8.8

OpenClaw < 2026.2.19 - Path Traversal in Feishu Media Temporary File Naming

OpenClaw versions prior to 2026.2.19 contain a path traversal vulnerability in the Feishu media download flow where untrusted media keys are interpolated directly into temporary file paths in extensions/feishu/src/media.ts. An attacker who can control Feishu media key values returned to the client can use traversal segments to escape os.tmpdir() and write arbitrary files within the OpenClaw process permissions.

Record
CVE-2026-22171
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-11
OSVGHSA-vj3g-5px3-gr46 6.9

OpenClaw vulnerable to path traversal in Feishu media temp-file naming allows writes outside os.tmpdir()

Summary

OpenClaw’s Feishu media download flow used untrusted Feishu media keys (imageKey / fileKey) when building temporary file paths in extensions/feishu/src/media.ts. Because those keys were interpolated directly into temp-file paths, traversal segments could escape the temp directory and redirect writes outside os.tmpdir().

Impact

This is an arbitrary file write issue (within the OpenClaw process file permissions). If an attacker can control Feishu media key values returned to the client (for example via compromised upstream response path), they can influence where downloaded bytes are written.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published npm version at triage: 2026.2.17
  • Affected versions: <= 2026.2.17
  • Fixed version: 2026.2.19

Fix Commit(s)

  • c821099157a9767d4df208c6b12f214946507871
  • cdb00fe2428000e7a08f9b7848784a0049176705
  • ec232a9e2dff60f0e3d7e827a7c868db5254473f

Remediation

The fix removes key-derived temp-file naming and keeps downloads in safe temp locations. Additional hardening isolates SDK writeFile calls in per-download temp directories (mkdtemp) with deterministic cleanup, enforces Feishu key trust-boundary validation, and adds a repository guard test against dynamic path.join(os.tmpdir(), \...${...}`)` patterns in runtime code.

OpenClaw thanks @allsmog for reporting.

Record
GHSA-vj3g-5px3-gr46
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 before 2026.2.19
2026.2.19

History

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

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

In short

CVE-2026-22171 is a high vulnerability (CVSS 8.8) in Openclaw, published March 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 29th percentile. Fixed in openclaw 2026.2.19.

References

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