CVE-2026-35633
Received Received - Intake
Unbounded Memory Allocation in OpenClaw Remote Media HTTP Handling

Publication date: 2026-04-09

Last updated on: 2026-04-15

Assigner: VulnCheck

Description
OpenClaw before 2026.3.22 contains an unbounded memory allocation vulnerability in remote media HTTP error handling that allows attackers to trigger excessive memory consumption. Attackers can send crafted HTTP error responses with large bodies to remote media endpoints, causing the application to allocate unbounded memory before failure handling occurs.
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Meta Information
Published
2026-04-09
Last Modified
2026-04-15
Generated
2026-06-16
AI Q&A
2026-04-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-35633
EUVD
EUVD-2026-21122
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.3.22 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
CWE-789 The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
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Executive Summary

This vulnerability exists in OpenClaw versions before 2026.3.22 and involves unbounded memory allocation during remote media HTTP error handling.

Attackers can exploit this by sending specially crafted HTTP error responses with very large bodies to remote media endpoints.

As a result, the application allocates excessive amounts of memory before it can handle the failure, potentially leading to resource exhaustion.

Impact Analysis

The primary impact of this vulnerability is excessive memory consumption caused by the application when processing crafted HTTP error responses.

This can lead to application instability or crashes due to resource exhaustion, potentially resulting in denial of service.

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