CVE-2021-47905 MyBB Delete Account Plugin 1.4 - Cross-Site Scripting
Attackers can inject malicious scripts into the account deletion reason field, executing them in the admin interface to potentially compromise administrator accounts.
- 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-2021-47905?
CVE-2021-47905 is a medium-severity cross-site scripting vulnerability in vintagedaddyo MyBB Delete Account Plugin, published on 23 Jan 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
MyBB Delete Account Plugin 1.4 contains a cross-site scripting vulnerability in the account deletion reason input field. Attackers can inject malicious scripts that will execute in the admin interface when viewing delete account reasons.
Weakness: CWE-79
Which versions are affected by CVE-2021-47905?
It affects 1 product.
Products include Mybb Delete Account.
How do I fix CVE-2021-47905?
No fix has been published for CVE-2021-47905 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-2021-47905 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47905 exists.
Sources
Also known as GHSA-wj7p-g6rj-6gf9.