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PatchSiren cyber security CVE debrief

CVE-2026-0552 mra13 CVE debrief

The Simple Shopping Cart plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wpsc_display_product' shortcode in all versions up to, and including, 5.2.4. This vulnerability exists due to insufficient input sanitization and output escaping on user-supplied attributes. Authenticated attackers with contributor-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This issue has a CVSS score of 6.4 and is considered Medium severity.

Vendor
mra13
Product
Simple Shopping Cart
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-04
Original CVE updated
2026-07-24
Advisory published
2026-04-04
Advisory updated
2026-07-24

Who should care

Authenticated attackers with contributor-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Operators of WordPress deployments using the Simple Shopping Cart plugin should review their installations and update to a version beyond 5.2.4. Security teams should monitor for suspicious activity and implement additional security measures such as Web Application Firewall (WAF) rules to detect and prevent XSS attacks.

Technical summary

The vulnerability exists in the 'wpsc_display_product' shortcode of the Simple Shopping Cart plugin for WordPress. The plugin fails to properly sanitize and escape user-supplied attributes, allowing for Stored Cross-Site Scripting attacks. This can be exploited by authenticated attackers with contributor-level access and above. The vulnerability has a CVSS score of 6.4, indicating Medium severity.

Defensive priority

Medium priority due to the CVSS score of 6.4 and the potential for authenticated attackers to inject malicious scripts.

Recommended defensive actions

  • Update the Simple Shopping Cart plugin to a version beyond 5.2.4.
  • Restrict access to the plugin's shortcode functionality.
  • Implement additional security measures such as Web Application Firewall (WAF) rules to detect and prevent XSS attacks.
  • Regularly monitor for suspicious activity and update the plugin as soon as a patch is available.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-04-04T08:16:05.727Z and last modified on 2026-07-24T22:10:00.140Z. The NVD entry is currently Deferred. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected deployments and review official advisories for specific guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-04T08:16:05.727Z and has not been modified since then. The NVD entry is currently Deferred.