CVE-2026-100540 openclaw CVE debrief

Who should care

Defenders and administrators of OpenClaw Feishu, especially those with multi-account setups, should assess their configurations and ensure that disabled accounts do not pose a security risk.

Why it matters

CVE-2026-100540 is a vulnerability in OpenClaw Feishu that can be exploited in multi-account setups, potentially allowing unauthorized access to Feishu resources. Defenders should verify default account configurations, ensure disabled accounts do not retain credentials, and update to version 2026.8.1 or later.

• Verification of default account configurations is necessary to prevent potential credential misuse.
• Ensuring disabled accounts do not retain active credentials is crucial to maintaining security.
• Updating to version 2026.8.1 or later is recommended to address the vulnerability.
• Monitoring for unusual activity related to Feishu resources can help detect potential exploitation attempts.

Technical summary

The vulnerability in OpenClaw Feishu before 2026.8.1 allows attackers to exploit multi-account setups by targeting disabled default accounts that retain credentials. This can lead to unauthorized access to Feishu resources. Defenders should verify default account configurations, ensure disabled accounts do not retain active credentials, and update to version 2026.8.1 or later. Verification of default account configurations is necessary to prevent potential credential misuse. Ensuring disabled accounts do not retain active credentials is crucial to maintaining security.

Defensive priority

Defenders should prioritize verifying the configuration of default accounts in OpenClaw Feishu, especially in multi-account setups, and ensure that disabled accounts do not retain active credentials.

Recommended defensive actions

• Verify the configuration of default accounts in OpenClaw Feishu, especially in multi-account setups.
• Ensure that disabled accounts do not retain active credentials.
• Update OpenClaw Feishu to version 2026.8.1 or later.
• Monitor for unusual activity related to Feishu resources.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details about the vulnerability. However, the corpus does not establish specific versions affected or fixed beyond 'before 2026.8.1', nor does it confirm exploitation or specific impacts beyond potential credential misuse.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.