🛡️ CVE-2026-44109 — openclaw

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-1188 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

OpenClaw: Feishu webhook and card-action validation now fail closed

Summary

Feishu webhook mode accepted missing encryptKey configuration as valid and blank card-action callback tokens as usable lifecycle tokens. Together, those fail-open paths could allow unauthenticated webhook or card-action traffic to reach command dispatch in affected deployments.

Impact

A deployment using Feishu webhook mode without a configured encryptKey, or handling malformed card-action callbacks with blank callback tokens, could fail open instead of rejecting the request. Severity remains critical because affected webhook deployments expose a network-triggered path into OpenClaw command handling without the expected Feishu signature or replay protection.

Affected versions

  • Affected: < 2026.4.15
  • Patched: 2026.4.15

Fix

OpenClaw 2026.4.15 makes Feishu webhook and card-action validation fail closed. Webhook mode now refuses to start without an encryptKey, missing signing configuration returns invalid instead of valid, invalid signatures return 401, and blank card-action callback tokens are rejected before dispatch.

Verified in v2026.4.15:

  • extensions/feishu/src/monitor.transport.ts returns invalid when encryptKey is missing, refuses webhook mode without encryptKey, and rejects invalid signatures before JSON handling.
  • extensions/feishu/src/card-action.ts rejects blank callback tokens in the card-action lifecycle guard.
  • extensions/feishu/src/monitor.webhook-security.test.ts covers missing-encryptKey startup and transport rejection.
  • extensions/feishu/src/monitor.card-action.lifecycle.test.ts covers malformed blank-token card actions being dropped before handler dispatch.

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

  • c8003f1b33ed2924be5f62131bd28742c5a41aae via PR #66707

Thanks to @dhyabi2 for reporting this issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-44109 is classified as CWE-1188: Insecure Default Initialization of Resource. Default settings are insecure, so an installation is exposed until someone changes them.

Affected software

CVE-2026-44109 is recorded against 1 package.

  • openclaw

Timeline and source

Published on 17 April 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
www.vulncheck.com (Web)

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE CWE-1188
Public Exploit ✅ No
Source OSV
Published 2026-04-17
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
openclaw — —

Similar Threats

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