CVE-2026-104641
Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient
Medium 5.3
The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an account they control.
Assigner
WPScan
WPScan
Published
2026-10-21
2026-10-21
Updated
2026-10-21
2026-10-21
Reserved
2026-10-02
2026-10-02
Scores
| Source | CVSS | Score | Severity | Vector |
|---|---|---|---|---|
| WPScan | 3.1 | 5.3 | Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Weaknesses
Affected
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Simple Shopping Cart | < 5.3.3 (affected)
others: unaffected |
References
- https://wpscan.com/vulnerability/8227f34e-d2ae-4eb4-9984-aeb07d93ed25/ exploitvdb-entrytechnical-description
Full CVE JSON record (5.2)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-104641",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-21T10:11:52.979214Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-345",
"description": "CWE-345 Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T10:14:55.498Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://wordpress.org/plugins",
"defaultStatus": "unaffected",
"product": "Simple Shopping Cart",
"vendor": "Unknown",
"versions": [
{
"lessThan": "5.3.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Mohammed Abd Alrahman"
},
{
"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner\u0027s PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an account they control."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-345 Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T08:38:56.835Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
"exploit",
"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/8227f34e-d2ae-4eb4-9984-aeb07d93ed25/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Simple Shopping Cart \u003c 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2026-104641",
"datePublished": "2026-10-21T08:38:56.835Z",
"dateReserved": "2026-10-02T05:36:47.389Z",
"dateUpdated": "2026-10-21T10:14:55.498Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}