What’s Vulnerable › Vulnerabilities

CVE-2026-4072: WordPress PayPal Donation <= 1.01 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'amount' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-21 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• tstachl WordPress PayPal Donation: through 1.01

References

• https://plugins.trac.wordpress.org/browser/wordpress-paypal-donation/tags/1.01/wp-paypal-donation.php#L260
• https://plugins.trac.wordpress.org/browser/wordpress-paypal-donation/tags/1.01/wp-paypal-donation.php#L271
• https://plugins.trac.wordpress.org/browser/wordpress-paypal-donation/trunk/wp-paypal-donation.php#L260
• https://plugins.trac.wordpress.org/browser/wordpress-paypal-donation/trunk/wp-paypal-donation.php#L271
• https://www.wordfence.com/threat-intel/vulnerabilities/id/99a8b48b-2967-4179-a0eb-626bbe273f03?source=cve

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