What is CVE-2026-19914?

CVE-2026-19914 is a high-severity vulnerability in Uscnanbu Welcart E-Commerce, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-01.

How severe is CVE-2026-19914?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Uscnanbu Welcart E-Commerce

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-01 · last modified 2026-09-01.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (25.4th percentile), scored 2026-10-17.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.003 · change: -0.001

Affected products

Uscnanbu Welcart E-Commerce

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-19914?: CVE-2026-19914 is a high-severity vulnerability in Uscnanbu Welcart E-Commerce, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-01.
How severe is CVE-2026-19914?: High severity. CVSS v3 base score is 7.2 out of 10.