CVE-2021-43032 Cross-site scripting in n/a
An admin can inject XSS payloads into advertisements, allowing client-side code execution against users viewing the site.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-43032?
CVE-2021-43032 is a medium-severity cross-site scripting vulnerability in n/a, published on 3 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2021-43032?
It affects 1 product.
Products include Xenforo Xenforo.
How do I fix CVE-2021-43032?
No fix has been published for CVE-2021-43032 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-43032 being exploited?
There is no known exploitation of CVE-2021-43032 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
- CVE-2025-71279 XenForo Passkey Security Bypass
- CVE-2026-73309 XenForo < 2.3.13 Authentication Bypass via OAuth2 Token Endpoint
- CVE-2026-73311 XenForo < 2.3.13 OAuth2 Authorization Code Reuse
- CVE-2026-73312 XenForo < 2.3.13 Refresh Token Replay via Expired Access Token
- CVE-2024-38457 Xenforo before 2.2.16 allows CSRF.
Sources
Also known as GHSA-rpx6-gj3w-h6qv.