CVE-2026-62213 Overview
CVE-2026-62213 is a credential exposure vulnerability affecting OpenClaw versions before 2026.5.27. The flaw allows lower-trust callers to retrieve Bot Framework tokens through Microsoft Teams outbound requests. Attackers with limited privileges can access configured input paths to obtain credentials that should remain isolated within the trusted boundary.
The issue is tracked under CWE-522: Insufficiently Protected Credentials. Exploitation requires network access and low privileges but no user interaction. Successful exploitation compromises the confidentiality of authentication tokens used to interact with Microsoft Bot Framework services.
Critical Impact
Attackers can extract Bot Framework tokens from OpenClaw deployments and reuse them to impersonate the bot identity against Microsoft Teams services.
Affected Products
- OpenClaw versions prior to 2026.5.27
- OpenClaw Node.js package (openclaw:openclaw)
- Deployments integrated with Microsoft Teams via Bot Framework
Discovery Timeline
- 2026-07-17 - CVE-2026-62213 published to NVD
- 2026-07-21 - Last updated in NVD database
Technical Details for CVE-2026-62213
Vulnerability Analysis
OpenClaw is a Node.js framework used to build conversational bots that integrate with Microsoft Teams through the Bot Framework. The framework issues outbound HTTP requests to Teams service endpoints as part of normal bot operation. These outbound requests carry authentication material used to prove the bot's identity to Microsoft services.
The vulnerability arises because the outbound request path does not sufficiently restrict which callers can trigger or observe the request. Lower-trust callers can supply input that causes tokens to be exposed outside the trusted boundary. Because Bot Framework tokens grant access to send and receive messages under the bot's identity, exposure enables impersonation and potential lateral movement into connected Teams workspaces.
Root Cause
The root cause is insufficiently protected credentials (CWE-522) within the Microsoft Teams outbound request handler. The affected code paths permit lower-privileged input paths to observe or influence outbound requests that carry Bot Framework tokens. The trust boundary between authenticated bot infrastructure and caller-supplied input is not enforced. Version 2026.5.27 corrects the boundary and prevents token exposure to lower-trust callers.
Attack Vector
An attacker with network access and low privileges submits crafted input to a configured OpenClaw input path. The framework processes the input and generates outbound MS Teams requests using the bot's credentials. Due to the boundary violation, the attacker observes or captures the Bot Framework token embedded in the outbound flow. The attacker then reuses the token to authenticate as the bot against Microsoft services.
The vulnerability affects confidentiality only. Integrity and availability of the OpenClaw host are not directly impacted, though the leaked token can enable follow-on impersonation attacks against Teams users. Refer to the VulnCheck Advisory on Token Leakage for additional technical detail.
Detection Methods for CVE-2026-62213
Indicators of Compromise
- Unexpected outbound HTTPS requests from OpenClaw hosts to Microsoft Bot Framework endpoints originating from low-privilege caller contexts.
- Bot Framework API activity from source addresses that do not match your deployed OpenClaw infrastructure.
- Log entries showing Teams bot messages authenticated by tokens issued to your OpenClaw application but sent outside expected time windows or geographies.
Detection Strategies
- Inspect OpenClaw application logs for requests to input paths that trigger MS Teams outbound calls from unauthenticated or low-trust sessions.
- Correlate Bot Framework audit logs with OpenClaw request logs to identify token usage that lacks a matching legitimate inbound event.
- Deploy egress monitoring to alert when Bot Framework tokens appear in response bodies returned to external callers.
Monitoring Recommendations
- Enable Microsoft Entra ID sign-in logs for the bot service principal and alert on token usage from unexpected client IPs.
- Track OpenClaw process outbound network connections to *.botframework.com and *.teams.microsoft.com and validate they map to legitimate bot interactions.
- Retain application logs long enough to reconstruct request chains that produced outbound Teams calls.
How to Mitigate CVE-2026-62213
Immediate Actions Required
- Upgrade OpenClaw to version 2026.5.27 or later across all deployments.
- Rotate any Bot Framework credentials and application secrets used by OpenClaw prior to upgrade, since they may already be exposed.
- Review Bot Framework audit logs for token usage anomalies during the exposure window and revoke sessions where necessary.
Patch Information
OpenClaw maintainers published the fix in release 2026.5.27. Details are available in the GitHub Security Advisory GHSA-v54h-q2vx-vgg4. Administrators should update the openclaw Node.js dependency and redeploy affected bot services.
Workarounds
- Restrict network access to OpenClaw input paths so that only trusted upstream services can reach the bot until the patch is applied.
- Place OpenClaw behind an authenticating reverse proxy that rejects lower-trust callers before requests reach the vulnerable handler.
- Scope Bot Framework application permissions to the minimum required Teams channels to limit blast radius if a token is exposed.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
