4.3

CVE-2026-94094

OpenClaw Canvas Host Route server.ts createCanvasHostHandler denial of service

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellern/a
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Produkt OpenClaw
Version 2026.9.0
Status affected
Version 2026.9.1
Status affected
Version 2026.9.2
Status affected
Version 2026.9.3
Status affected
Version 2026.9.4
Status affected
Version 2026.9.5
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.195
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
cna@vuldb.com 2.1 0 0
CVSS: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
cna@vuldb.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
cna@vuldb.com 4 8 2.9
AV:N/AC:L/Au:S/C:N/I:N/A:P
CWE-404 Improper Resource Shutdown or Release

The product does not release or incorrectly releases a resource before it is made available for re-use.

https://github.com/lche511/cve/tree/main/OpenClaw_Canvas_Big_GET_DoS_Report
https://vuldb.com/cve/CVE-2026-94094
https://vuldb.com/submit/882009
https://vuldb.com/vuln/408023
https://vuldb.com/vuln/408023/cti