5.3
Medium
CVE-2026-94094 A flaw has been found in OpenClaw up to 2026.9.5
Description
A flaw has been found in OpenClaw up to 2026.9.5. Affected is the function createCanvasHostHandler of the file extensions/canvas/src/host/server.ts of the component Canvas Host Route. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been published and may be used. Fix suggestion's "streaming/size-limit" was never shipped - latest 2026.9.5 still buffers the whole file via readFile() (src/canvas/serve.runtime.ts:17,114), unlike the sibling WS path which caps at 64KB. The vendor was contacted early about this disclosure.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenClaw 2026.9 | 2026.9.0 → 2026.9.5 | No fix stated |
Other CVEs of OpenClaw
The 5 CVEs of OpenClaw →
CVE-2026-8305
A vulnerability was detected in OpenClaw up to 2026.1.24
6.9
Medium
CVE-2026-6011
A weakness has been identified in OpenClaw up to 2026.1.26
6.3
Medium
CVE-2026-4040
A vulnerability was identified in OpenClaw up to 2026.2.17
4.8
Medium
CVE-2026-4039
A vulnerability was determined in OpenClaw 2026.2.19-2
5.3
Medium