CVE-2024-32472CWE-79CWE-80

excalidraw vulnerable to a Stored XSS in excalidraw's web embed component

Medium · published April 17, 2024

CVSS v3.1
6.1
EPSS
1%
Percentile
45.9
In the wild
Unconfirmed
What it is

excalidraw is an open source virtual hand-drawn style whiteboard. A stored XSS vulnerability in Excalidraw's web embeddable component. This allows arbitrary JavaScript to be run in the context of the domain where the editor is hosted. There were two vectors. One rendering untrusted string as iframe's `srcdoc` without properly sanitizing against HTML injection. Second by improperly sanitizing against attribute HTML injection. This in conjunction with allowing `allow-same-origin` sandbox flag (necessary for several embeds) resulted in the XSS. This vulnerability is fixed in 0.17.6 and 0.16.4.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00561 · 45.9th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2024-04-17T21:23Z
EPSS history
Timeline
  • 17 APR 21:23Z
    excalidraw vulnerable to a Stored XSS in excalidraw's web embed component
    cvelistv5