gopay before 1.5.119 disables TLS certificate verification in defaultClient() in pkg/xhttp/client.go, allowing man-in-the-middle attackers to impersonate payment provider APIs. Attackers can present any certificate to read merchant credentials, signatures and transaction data, and modify payment, refund and order query responses.
PUBLISHED5.2CWE-295
gopay before 1.5.119 Disabled TLS Certificate Verification in xhttp Client
Problem type
Affected products
go-pay
gopay
< 1.5.119 - AFFECTED
References
GitHub Issue #540
https://github.com/go-pay/gopay/issues/540
github.com
https://github.com/go-pay/gopay/commit/f6df04fd4f64a2ad2c303ba063b6502bfdd259fd
github.com
https://github.com/go-pay/gopay/blob/v1.5.118/pkg/xhttp/client.go#L15-L37
github.com
https://github.com/go-pay/gopay
VulnCheck Advisory: gopay before 1.5.119 Disabled TLS Certificate Verification in xhttp Client
https://www.vulncheck.com/advisories/gopay-before-1.5.119-disabled-tls-certificate-verification-in-xhttp-client
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-105218Click to expand
{
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"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-105218",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"dateUpdated": "2026-10-04T17:09:53.573Z",
"dateReserved": "2026-10-04T13:04:00.479Z",
"datePublished": "2026-10-04T17:09:53.573Z",
"state": "PUBLISHED"
},
"containers": {
"cna": {
"providerMetadata": {
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"shortName": "VulnCheck",
"dateUpdated": "2026-10-04T17:09:53.573Z"
},
"datePublic": "2026-06-15T00:00:00.000Z",
"title": "gopay before 1.5.119 Disabled TLS Certificate Verification in xhttp Client",
"descriptions": [
{
"lang": "en",
"value": "gopay before 1.5.119 disables TLS certificate verification in defaultClient() in pkg/xhttp/client.go, allowing man-in-the-middle attackers to impersonate payment provider APIs. Attackers can present any certificate to read merchant credentials, signatures and transaction data, and modify payment, refund and order query responses."
}
],
"affected": [
{
"vendor": "go-pay",
"product": "gopay",
"defaultStatus": "unaffected",
"versions": [
{
"version": "0",
"status": "affected",
"versionType": "semver",
"lessThan": "1.5.119"
}
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}
],
"problemTypes": [
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"descriptions": [
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"lang": "en",
"description": "Improper Certificate Validation",
"cweId": "CWE-295",
"type": "CWE"
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"references": [
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"url": "https://github.com/go-pay/gopay/issues/540",
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{
"url": "https://github.com/go-pay/gopay/commit/f6df04fd4f64a2ad2c303ba063b6502bfdd259fd",
"tags": [
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},
{
"url": "https://github.com/go-pay/gopay/blob/v1.5.118/pkg/xhttp/client.go#L15-L37",
"tags": [
"technical-description"
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},
{
"url": "https://github.com/go-pay/gopay",
"tags": [
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},
{
"url": "https://www.vulncheck.com/advisories/gopay-before-1.5.119-disabled-tls-certificate-verification-in-xhttp-client",
"name": "VulnCheck Advisory: gopay before 1.5.119 Disabled TLS Certificate Verification in xhttp Client",
"tags": [
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"metrics": [
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH"
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"credits": [
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"value": "Siyang Wu",
"type": "finder"
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}