Unauthenticated payment bypass via forged settlement callback
Published Aug 12, 2026 · Updated Aug 12, 2026
Payment notification spoofing in Welcart e-Commerce before 2.11.33 allows remote attackers to mark unpaid orders as settled. The settlement callback accepts an order number and status flag without validating a signature, amount, or request origin. Unauthenticated access is sufficient to convert an attacker's own pay-later order from unpaid to settled, enabling fulfillment without payment.
Summary
What happened
Payment notification spoofing in Welcart e-Commerce before 2.11.33 allows remote attackers to mark unpaid orders as settled. The settlement callback accepts an order number and status flag without validating a signature, amount, or request origin. Unauthenticated access is sufficient to convert an attacker's own pay-later order from unpaid to settled, enabling fulfillment without payment.
The record
- CVE
- CVE-2026-15213
- Published
- Aug 12, 2026
- Updated
- Aug 12, 2026
- Vendor
- Welcart Inc.
- Product
- Welcart e-Commerce
- Classifications
- CWE-345, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 12, 2026CVE publishedPublication date reported by the CVE source.
- Aug 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <2.11.33
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- WPScan settlement callback proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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