What’s Vulnerable › Vulnerabilities

CVE-2021-43032

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-03 · updated 2026-06-17
• Weakness: CWE-79

Description

In XenForo through 2.2.7, a threat actor with access to the admin panel can create a new Advertisement via the Advertising function, and save an XSS payload in the body of the HTML document. This payload will execute globally on the client side.

Affected products

• XenForo: through 2.2.7

References

• https://github.com/SakuraSamuraii/CVE-2021-43032
• https://xenforo.com/community/forums/announcements/
• https://github.com/SakuraSamuraii/CVE-2021-43032
• https://xenforo.com/community/forums/announcements/

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