Product substitution via mismatched checkout identifier
Published Sep 5, 2026 · Updated Sep 6, 2026
Authorization bypass in Accept Stripe Payments before 2.1.4 allows remote attackers to obtain a different product after genuine payment. During IPN processing, the checkout result trusts a referenced product identifier without confirming that it matches the product recorded by Stripe, and only checks that the paid amount covers the referenced product's price. A completed genuine payment is required; substituting an equal- or lower-priced identifier causes fulfillment of the wrong product.
Summary
What happened
Authorization bypass in Accept Stripe Payments before 2.1.4 allows remote attackers to obtain a different product after genuine payment. During IPN processing, the checkout result trusts a referenced product identifier without confirming that it matches the product recorded by Stripe, and only checks that the paid amount covers the referenced product's price. A completed genuine payment is required; substituting an equal- or lower-priced identifier causes fulfillment of the wrong product.
The record
- CVE
- CVE-2026-81424
- Published
- Sep 5, 2026
- Updated
- Sep 6, 2026
- Vendor
- Tips and Tricks HQ
- Product
- Accept Stripe Payments
- Classifications
- CWE-639
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 5, 2026CVE publishedPublication date reported by the CVE source.
- Sep 6, 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 <2.1.4
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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