CVE-2026-100528 OpenClaw CVE debrief

Who should care

Defenders and operators of systems using OpenClaw versions before 2026.8.1, especially those integrating with third-party providers using OpenAI-compatible APIs, should assess exposure and prioritize remediation.

Why it matters

CVE-2026-100528 is a medium-severity vulnerability in OpenClaw that can lead to credential disclosure. Defenders should assess exposure, prioritize remediation, and verify OpenClaw configurations to prevent potential credential disclosure and authentication issues.

• Credential disclosure to unrelated provider endpoints
• Potential for misleading authentication errors
• Need for credential rotation if condition is observed
• Verification of OpenClaw version and configuration required

Technical summary

The OpenClaw npm package before version 2026.8.1 has a vulnerability that allows third-party provider credentials to be sent to the wrong endpoint. This occurs when a third-party provider uses an OpenAI-compatible API and the resolved model metadata lacks a concrete base URL. A pinned session that continues after a model configuration hot reload retains the provider's credential while the OpenAI SDK selects its own default endpoint. The issue is fixed in version 2026.8.1.

Defensive priority

Defenders should assess exposure and prioritize remediation for systems using OpenClaw versions before 2026.8.1, especially those integrating with third-party providers using OpenAI-compatible APIs.

Recommended defensive actions

• Assess exposure for systems using OpenClaw versions before 2026.8.1
• Rotate affected credentials if the condition is observed
• Update OpenClaw to version 2026.8.1 or later
• Review OpenClaw configurations to prevent potential credential disclosure
• Verify OpenClaw version and configuration required
• 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 on the vulnerability, its impact, and the fix in version 2026.8.1. However, additional information on exploitation or affected systems is limited. Defenders should verify OpenClaw configurations, assess exposure, and prioritize remediation to prevent potential credential disclosure and authentication issues. The vulnerability allows third-party provider credentials to be sent to the wrong endpoint, potentially disclosing credentials to an unrelated provider. This occurs when using an OpenAI

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.