payaddons Express Payment for Stripe Plugin up to 1.28.0 on WordPress Shortcode register_shortcode Type cross site scripting

Summaryinfo

A vulnerability was found in payaddons Express Payment for Stripe Plugin up to 1.28.0 on WordPress. It has been rated as problematic. Affected by this vulnerability is the function register_shortcode of the component Shortcode Handler. This manipulation of the argument Type causes cross site scripting. This vulnerability is handled as CVE-2026-8893. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in payaddons Express Payment for Stripe Plugin up to 1.28.0 on WordPress. It has been declared as problematic. Affected by this vulnerability is the function register_shortcode of the component Shortcode Handler. The manipulation of the argument type with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

The weakness was released by Muhammad Yudha. The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-8893 since 05/18/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 1.28.0 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• payaddons

Name

• Express Payment for Stripe Plugin

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28.0

CPE 2.3info

• 🔒
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CPE 2.2info

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