A vulnerability was detected in Excalidraw up to 0.18.1. The impacted element is an unknown function of the file packages/excalidraw/data/restore.ts of the component Imported File Handler. Performing a manipulation of the argument customData.generationData.html results in cross site scripting.
The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0