Is CVE-2026-120597 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-120597 being exploited in the wild.

How severe is CVE-2026-120597?

Medium severity, with a CVSS score of 4.3, published 2 November 2026.

Which products and versions are affected?

Welcart e-Commerce Plugin up to 2.12.6.

How is CVE-2026-120597 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-120597?

Check whether you run Welcart e-Commerce Plugin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-120597: Welcart e-Commerce Plugin reflected XSS in payment error handling

CVE-2026-120597 · Severity: medium · CVSS 4.3 · Published 2026-11-02

Welcart e-Commerce is a WordPress plugin that manages online storefronts and payment processing. An unauthenticated attacker can inject malicious JavaScript into error pages by crafting a specially-crafted link, allowing account takeover, credential theft, or malware distribution to site visitors. The e-SCOTT Smart payment gateway must be enabled for the vulnerability to be accessible.

Vendors: Welcart.

Quick answers

Is CVE-2026-120597 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-120597 being exploited in the wild.
How severe is CVE-2026-120597?: Medium severity, with a CVSS score of 4.3, published 2 November 2026.
Which products and versions are affected?: Welcart e-Commerce Plugin up to 2.12.6.
Is there a fix for CVE-2026-120597?: Yes: fixed in 2.12.7. Until then: Deactivate the e-SCOTT Smart payment gateway (set escott.activate and conv_activate to 'off') until the plugin is upgraded to version 2.12.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120597 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-120597?: Check whether you run Welcart e-Commerce Plugin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 2.12.7

Deactivate the e-SCOTT Smart payment gateway (set escott.activate and conv_activate to 'off') until the plugin is upgraded to version 2.12.7 or later.

Technical details

A reflected cross-site scripting (XSS) vulnerability exists in the ESCOTT_MAIN::error_page_message() function in classes/paymentESCOTT.main.class.php, where the ResponseCd parameter is reflected without proper HTML escaping. An unauthenticated attacker can reach this sink by sending a crafted GET request to the cart page with acting_return=1 and MerchantFree2=acting_escott_conv parameters, bypassing IP guards and nonce checks. The vulnerability is fixed by escaping output with esc_html() before rendering.

Affected products

Welcart e-Commerce Plugin up to 2.12.6

Timeline

2026-11-02: disclosed: CVE-2026-120597 published
2026-11-02: patched: Fix released in version 2.12.7 with esc_html() escaping applied

References

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