PoC Index85,079 CVEs with PoCs

CVE-2026-94094

OpenClaw Canvas Host Route server.ts createCanvasHostHandler denial of service

LOW 2.1EPSS 0.5%

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
OpenClaw
CVSS v4.0 VULDB
2.1 LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 VULDB
4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v2.0 VULDB
4.0 MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P
EPSS
0.47% chance of exploitation in the next 30 days, 39th percentile
Published
2026-09-20
Updated
2026-09-22

Proof-of-concept exploits (1)

References

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