OpenClaw Canvas Host Route server.ts createCanvasHostHandler denial of service
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| n/a | OpenClaw | affected |
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| Openclaw | Openclaw |
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This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.471% probability within 30 days)
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| Metrics |
ssvc
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| 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. | |
| Title | OpenClaw Canvas Host Route server.ts createCanvasHostHandler denial of service | |
| First Time appeared |
Openclaw
Openclaw openclaw |
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| Weaknesses | CWE-404 | |
| CPEs | cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openclaw
Openclaw openclaw |
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| References |
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| Metrics |
cvssV2_0
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