CVE-2026-87091Welcart e-Commerce <= 2.12.2 - Unauthenticated Stored Cross-Site Scripting via Settlement Notification Parameters
Updated under an hour ago ()
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It affects uscnanbu Welcart e-Commerce. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.31%, higher than 23% of scored CVEs.
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The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Settlement Notification Parameters in all versions up to, and including, 2.12.2 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 IPN endpoint accepts the 'rel' and 'option' parameters with no authentication, nonce validation, or signature verification, meaning any unauthenticated attacker can directly submit malicious payloads that are stored and later rendered in the administrator's settlement error log view.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.31% (percentile 23)
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
uscnanbu Welcart e-Commerce uscnanbu:welcart_e_commerce (from the name) | through 2.12.2 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d6046c06-9a77-450f-9cdf-c5239e73cb6b?source=cve
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.12.2/functions/settlement_func.php#L906
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.12.2/functions/settlement_func.php#L951
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.12.2/functions/hoock_func.php#L631
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.12.2/functions/settlement_func.php#L569
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.11.29/functions/settlement_func.php#L906
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.11.29/functions/settlement_func.php#L951
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.11.29/functions/hoock_func.php#L631
- https://plugins.trac.wordpress.org/browser/usc-e-shop/tags/2.11.29/functions/settlement_func.php#L569
- https://plugins.trac.wordpress.org/changeset/3690880/usc-e-shop
- https://plugins.trac.wordpress.org/changeset/3690880/usc-e-shop/trunk/functions/settlement_func.php
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.