What’s Vulnerable › Vulnerabilities

CVE-2024-32472: excalidraw vulnerable to a Stored XSS in excalidraw's web embed component

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-17 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• @excalidraw/excalidraw: from 0.16.0 before 0.16.4; from 0.17.0 before 0.17.6 — fixed in 0.16.4, 0.17.6

How to fix

Upgrade to a fixed version: @excalidraw/excalidraw 0.16.4, 0.17.6. Check the vendor advisory for mitigations.

References

• https://github.com/excalidraw/excalidraw/commit/6be752e1b6d776ccfbd3bb9eea17463cb264121d
• https://github.com/excalidraw/excalidraw/commit/988f81911ca58e3ca2583e0dd44a954dd00e09d0
• https://github.com/excalidraw/excalidraw/security/advisories/GHSA-m64q-4jqh-f72f
• https://github.com/excalidraw/excalidraw/commit/6be752e1b6d776ccfbd3bb9eea17463cb264121d
• https://github.com/excalidraw/excalidraw/commit/988f81911ca58e3ca2583e0dd44a954dd00e09d0
• https://github.com/excalidraw/excalidraw/security/advisories/GHSA-m64q-4jqh-f72f

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