CVE-2021-24478 Bookshelf <= 2.0.4 - Authenticated Stored Cross-Site Scripting (XSS)
Authenticated attackers can inject malicious scripts via the PayPal email setting in the Bookshelf WordPress plugin, potentially compromising user sessions.
- 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-2021-24478?
CVE-2021-24478 is a medium-severity cross-site scripting vulnerability in Unknown Bookshelf, published on 2 Aug 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its "Paypal email address" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue
Weakness: CWE-79
Which versions are affected by CVE-2021-24478?
It affects 1 product.
Products include Bookshelf Project Bookshelf.
How do I fix CVE-2021-24478?
No fix has been published for CVE-2021-24478 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-2021-24478 being exploited?
There is no known exploitation of CVE-2021-24478 in the wild and no public exploit code.
Sources
Also known as GHSA-7hv3-9hqr-c553.