Authentication Bypass in OpenClaw Feishu by OpenClaw
CVE-2026-100540

7.6HIGH

Key Information:

Vendor

Openclaw

Status
Feishu
Vendor
CVE Published:
26 September 2026

What is CVE-2026-100540?

The vulnerability in OpenClaw's Feishu prior to version 2026.8.1 arises from inadequate validation of disabled default accounts within multi-account configurations. Attackers can exploit this weakness, allowing them to leverage retained credentials to access and alter Feishu resources linked to a revoked identity. Ensuring the security of configurations is crucial to mitigate unauthorized access risks.

Affected Version(s)

feishu 0 < 2026.8.1

feishu 2026.8.1

References

https://github.com/openclaw/openclaw/security/advisories/...
vendor-advisory
https://www.vulncheck.com/advisories/openclaw-feishu-befo...
third-party-advisory

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.