CVE-2021-47927 WordPress Plugin WP Symposium Pro 2021.10 Stored XSS via wps_admin_forum_add_name
Authenticated attackers can inject malicious scripts via the forum name parameter in WP Symposium Pro, leading to stored XSS execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47927?
CVE-2021-47927 is a medium-severity cross-site scripting vulnerability in Wpsymposiumpro WP Symposium Pro, published on 10 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
WordPress Plugin WP Symposium Pro 2021.10 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by exploiting insufficient sanitization of the forum name parameter. Attackers can submit POST requests to the admin setup page with JavaScript payloads in the wps_admin_forum_add_name parameter, which are stored and executed when the forum is accessed.
Weakness: CWE-79
Which versions are affected by CVE-2021-47927?
How do I fix CVE-2021-47927?
No fix has been published for CVE-2021-47927 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-2021-47927 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47927 exists.
Sources
Also known as GHSA-rj36-m5c4-rgw9.