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CVE-2026-8893

MEDIUM 6.4 CVSS 3.1
Published
June 6, 2026
Last modified
July 23, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Express Payment For Stripe plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'type' attribute of the [stripe-express] shortcode in versions up to, and including, 1.28.0. This is due to insufficient input sanitization and output escaping on the shortcode attribute value, which is concatenated into an HTML attribute in the rendered output of the register_shortcode() function without being passed through esc_attr() or any other escaping function. 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 WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • payaddons Express Payment For Stripe — Up to and including 1.28.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wp-stripe-express/tags/1.28.0/includes/wp-stripe-shortcodes.php#L31
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wp-stripe-express/tags/1.28.0/includes/wp-stripe-shortcodes.php#L46
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3553233%40wp-stripe-express&new=3553233%40wp-stripe-express&sfp_email=&sfph_mail=
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/1a7dbb82-b484-4b86-b8dc-7a1e7291dec2?source=cve
  • nvd.nist.gov Official NVD record