CVE-2023-26140

@excalidraw/excalidraw Cross-site Scripting vulnerability

6.1 MediumFix available

Versions of the package @excalidraw/excalidraw from 0.0.0 are vulnerable to Cross-site Scripting (XSS) via embedded links in whiteboard objects due to improper input sanitization.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.56%Up 0.5 points since Aug 16, 2023

What each source reports

CVE List Score used 6.1

Versions of the package @excalidraw/excalidraw from 0.0.0 are vulnerable to Cross-site Scripting (XSS) via embedded links in whiteboard objects due to improper input sanitization.

Record: CVE-2023-26140
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2023-2357 6.1

Versions of the package @excalidraw/excalidraw from 0.0.0 are vulnerable to Cross-site Scripting (XSS) via embedded links in whiteboard objects due to improper input sanitization.

Record: EUVD-2023-2357
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P
Updated: 2026-11-03

GitHub AdvisoriesGHSA-v7v8-gjv7-ffmr 6.1

@excalidraw/excalidraw Cross-site Scripting vulnerability

Impact

XSS vulnerability due to improperly sanitizing URLs of links that can be attached on canvas elements. This affects users of the npm package @excalidraw/excalidraw provided it was deployed in environments where untrusted user input in drawings that are then shared with third parties is a concern. If you only hosted the editor in trusted environments, or sharing didn't take place, the impact is minimized.

Patches

Patch is available on version 0.15.3 and up (stable), or latest @excalidraw/excalidraw@next (unstable releases).

Workarounds

No workaround without upgrading unless deployed in environments without untrusted user input.

References

https://security.snyk.io/vuln/SNYK-JS-EXCALIDRAWEXCALIDRAW-5841658 https://github.com/excalidraw/excalidraw/pull/6728

Record: GHSA-v7v8-gjv7-ffmr
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.1

Versions of the package @excalidraw/excalidraw from 0.0.0 are vulnerable to Cross-site Scripting (XSS) via embedded links in whiteboard objects due to improper input sanitization.

Record: CVE-2023-26140
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 6.1

Versions of the package @excalidraw/excalidraw from 0.0.0 are vulnerable to Cross-site Scripting (XSS) via embedded links in whiteboard objects due to improper input sanitization.

Record: CVE-2023-26140
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-v7v8-gjv7-ffmr 6.1

@excalidraw/excalidraw Cross-site Scripting vulnerability

Impact

Patches

Patch is available on version 0.15.3 and up (stable), or latest @excalidraw/excalidraw@next (unstable releases).

Workarounds

No workaround without upgrading unless deployed in environments without untrusted user input.

References

https://security.snyk.io/vuln/SNYK-JS-EXCALIDRAWEXCALIDRAW-5841658 https://github.com/excalidraw/excalidraw/pull/6728

Record: GHSA-v7v8-gjv7-ffmr
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

excalidraw

Affected packages

Affected packages
Package	Affected	Fixed
`@excalidraw/excalidraw` npm	before 0.15.3	0.15.3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-26140 is a medium vulnerability (CVSS 6.1) in Excalidraw, published August 16, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 46th percentile. Fixed in @excalidraw/excalidraw 0.15.3.