TI-2021-13195 Aliases CVE-2021-33850 GHSA-966j-fwrw-4gxw

Cross-site scripting in Microsoft Clarity

LOW 28CWE-79Published 2021-11-19 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

There is a Cross-Site Scripting vulnerability in Microsoft Clarity version 0.3. The XSS payload executes whenever the user changes the clarity configuration in Microsoft Clarity version 0.3. The payload is stored on the configuring project Id page.

Why it matters now

EPSS 0.01598 75th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Microsoft Clarity	0.3	—	No fix listed	CNA

Microsoft Clarity Vendor— Affected 0.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:clarity:0.3:::::wordpress::	0.3	Vulnerable	Microsoft

cpe:2.3:a:microsoft:clarity:0.3:*:*:*:*:wordpress:*:* Versions 0.3 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-33850
2026-10-03 Alias added: GHSA-966j-fwrw-4gxw

References

Exploit 1

https://cybersecurityworks.com/zerodays/cve-2021-33850-stored-cross-site-scripting-xss-in-wordpress-microsoft-clarity-plugin.html

TI-2024-00546 Microsoft Clarity <= 0.9.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences