Executive Summary

CVE-2026-43532 is a vulnerability in OpenClaw versions 2026.4.7 through 2026.4.9 where the software fails to properly normalize Discord event cover image parameters during sandbox media processing.

This failure allows attackers to bypass media normalization and inject host-local media references into channel action paths that expect normalized media, potentially circumventing security restrictions.

The root cause is incomplete input validation, specifically a lack of proper sanitization or normalization of media parameters.

The issue was fixed in OpenClaw version 2026.4.10 by adding the 'image' parameter to the sandbox media normalization process.

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Impact Analysis

This vulnerability can allow attackers to bypass sandbox media normalization controls, enabling them to inject host-local media references into paths that expect sanitized media.

Such bypasses may lead to unauthorized access to restricted files or resources within the host environment, potentially compromising system security.

Because the vulnerability involves improper input validation, it could be exploited to perform actions that the sandbox is designed to prevent.

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Detection Guidance

This vulnerability involves bypassing sandbox media normalization via Discord event cover image parameters in OpenClaw versions 2026.4.7 to 2026.4.9. Detection would involve checking if your OpenClaw installation is within these vulnerable versions.

Since the issue is related to improper normalization of the "image" parameter in sandbox media processing, you can detect attempts by monitoring logs or network traffic for unusual or host-local media references in Discord event cover image parameters that should normally be normalized.

Specific commands are not provided in the available resources, but general detection steps could include:

• Check the installed OpenClaw version to confirm if it is between 2026.4.7 and 2026.4.9.
• Inspect application logs or network traffic for Discord event cover image parameters containing local file paths or unnormalized media references.
• Use file integrity or process monitoring tools to detect unexpected access to host-local media paths via the OpenClaw application.

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Mitigation Strategies

The primary mitigation step is to upgrade OpenClaw to version 2026.4.10 or later, as these versions include the patch that properly normalizes the Discord event cover image parameters and prevents the sandbox media normalization bypass.

This update adds the "image" parameter to the sandbox media normalization process, ensuring that local file paths are rewritten to the sandbox directory and blocking potential security bypasses.

Until the upgrade is applied, consider monitoring for suspicious media references and restricting access to sensitive host-local media paths as a temporary mitigation.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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