OpenClaw (npm package 'openclaw') before 2026.8.1 contains an access-control bypass in the Microsoft Teams integration. (CVE-2026-100550)
OpenClaw npm package versions before 2026.8.1 contain an access-control bypass vulnerability in its Microsoft Teams integration. This flaw allows a Teams member who is not on the configured allowlist to trigger the agent despite group policy restrictions. The issue is resolved in version 2026.8.1.
AI Analysis
Technical Summary
The OpenClaw npm package (openclaw) prior to version 2026.8.1 has an access-control bypass vulnerability (CVE-2026-100550) in its Microsoft Teams integration. When the groupPolicy is set to allowlist, if a configured access group is missing or unsupported, the group-resolution incorrectly results in denial but this denial is not enforced by the final message admission check. Consequently, a Teams member outside the allowlist can still activate the configured agent, bypassing intended group boundaries. The impact depends on the permissions and data accessible to the agent. The vulnerability is fixed in version 2026.8.1.
Potential Impact
An attacker who is a Microsoft Teams member but not on the allowlist can bypass access controls and trigger the OpenClaw agent. This could lead to unauthorized access or actions depending on the conversations, tools, and data accessible to the agent. The CVSS score is 5.4 (medium severity), indicating limited confidentiality and integrity impact without availability impact.
Mitigation Recommendations
Upgrade OpenClaw to version 2026.8.1 or later, where this access-control bypass vulnerability is fixed. No other mitigation is indicated.
OpenClaw (npm package 'openclaw') before 2026.8.1 contains an access-control bypass in the Microsoft Teams integration. (CVE-2026-100550)
Description
OpenClaw npm package versions before 2026.8.1 contain an access-control bypass vulnerability in its Microsoft Teams integration. This flaw allows a Teams member who is not on the configured allowlist to trigger the agent despite group policy restrictions. The issue is resolved in version 2026.8.1.
CVSS v3.1
Score 5.4medium
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The OpenClaw npm package (openclaw) prior to version 2026.8.1 has an access-control bypass vulnerability (CVE-2026-100550) in its Microsoft Teams integration. When the groupPolicy is set to allowlist, if a configured access group is missing or unsupported, the group-resolution incorrectly results in denial but this denial is not enforced by the final message admission check. Consequently, a Teams member outside the allowlist can still activate the configured agent, bypassing intended group boundaries. The impact depends on the permissions and data accessible to the agent. The vulnerability is fixed in version 2026.8.1.
Potential Impact
An attacker who is a Microsoft Teams member but not on the allowlist can bypass access controls and trigger the OpenClaw agent. This could lead to unauthorized access or actions depending on the conversations, tools, and data accessible to the agent. The CVSS score is 5.4 (medium severity), indicating limited confidentiality and integrity impact without availability impact.
Mitigation Recommendations
Upgrade OpenClaw to version 2026.8.1 or later, where this access-control bypass vulnerability is fixed. No other mitigation is indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5m2m-2jqh-2wpg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100550"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6ab74f2df7a7c54106e13851
Added to database: 09/26/2026, 04:50:53 UTC
Last enriched: 09/26/2026, 04:56:45 UTC
Last updated: 09/27/2026, 01:47:40 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.