CVE-2026-19914

The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_order' parameter in all versions up to, and including, 2.12.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is delivered via the guest checkout form, requiring no authentication, and executes when an administrator views the affected order in the WordPress admin panel.

CVSS v3.1

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS

0.47% chance of exploitation in the next 30 days, 39th percentile

Published

2026-09-01

Proof-of-concept exploits (1)

• HORKimhab/CVE-2026-19912-CVE-2026-19913-CVE-2026-199140★ · 2026-08-26

References

• CVE Record
• NVD entry

Related

• CVE-2026-19913
• CVE-2026-19916
• CVE-2026-19912
• CVE-2026-19917
• CVE-2026-1991
• CVE-2026-19918