FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| FOSSBilling | FOSSBilling | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Fossbilling | Fossbilling |
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No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.424% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Fossbilling
Fossbilling fossbilling |
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| Vendors & Products |
Fossbilling
Fossbilling fossbilling |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount (`mc_gross`) to the client's balance without validating it against the invoice total. Combined with a $0.05 floating-point epsilon tolerance in the invoice credit-payment logic, this allows a client to underpay an invoice by up to $0.04 and still have it marked as fully paid. Version 0.8.0 patches the issue. There is no effective workaround without modifying the source code. Merchants using the PayPalEmail adapter should monitor IPN transactions for amounts that do not match their corresponding invoice totals, and manually review and refund suspicious payments. | |
| Title | FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment | |
| Weaknesses | CWE-1284 CWE-754 |
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| References |
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| Metrics |
cvssV4_0
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