CVE-2026-4072 Cross-site scripting in WordPress PayPal Donation
Authenticated attackers can inject arbitrary scripts via shortcode attributes, leading to script execution on victim pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4072?
CVE-2026-4072 is a medium-severity cross-site scripting vulnerability in tstachl WordPress PayPal Donation, published on 21 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The WordPress PayPal Donation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'donate' shortcode in all versions up to, and including, 1.01. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes such as 'amount', 'email', 'title', 'return_url', 'cancel_url', 'ccode', and 'image'. The wordpress_paypal_donation_create() function uses extract(shortcode_atts(...)) to process shortcode attributes and then directly interpolates these values into HTML output within single-quoted attribute values without any escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-4072?
How do I fix CVE-2026-4072?
No fix has been published for CVE-2026-4072 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-2026-4072 being exploited?
There is no known exploitation of CVE-2026-4072 in the wild and no public exploit code.
Sources
Also known as GHSA-jxp3-mpj8-9vw7.