CVE-2021-24440 Sign-up Sheets < 1.0.14 - Authenticated Stored Cross-Site Scripting (XSS)
High-privilege users can inject JavaScript into Sign-up Sheets fields, leading to stored XSS in the admin dashboard.
- 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-2021-24440?
CVE-2021-24440 is a medium-severity cross-site scripting vulnerability in Unknown Sign-up Sheets, published on 12 Jul 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Sign-up Sheets WordPress plugin before 1.0.14 did not sanitise or escape some of its fields when creating a new sheet, allowing high privilege users to add JavaScript in them, leading to a Stored Cross-Site Scripting issue. The payloads will be triggered when viewing the 'All Sheets' page in the admin dashboard
Weakness: CWE-79
Which versions are affected by CVE-2021-24440?
It affects 1 product.
Products include Fetchdesigns Sign-Up Sheets.
How do I fix CVE-2021-24440?
No fix has been published for CVE-2021-24440 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-2021-24440 being exploited?
There is no known exploitation of CVE-2021-24440 in the wild and no public exploit code.
Other vulnerabilities in Unknown Sign-up Sheets
Sources
Also known as GHSA-q7cx-mv5x-6h53.