EUVD Vulnerability Catalog
EUVD-2026-92121
Severity: CRITICAL
Base Score: 9.1
CVSS Version: 4.0
Vulnerability Description
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.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
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Attack Vector (AV): Network
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Attack Complexity (AC): High
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Attack Requirements (AT): Present
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Privileges Required (PR): None
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User Interaction (UI): None
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Vulnerability Confidentiality Impact (VC): High
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Vulnerability Integrity Impact (VI): High
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Vulnerability Availability Impact (VA): None
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Subsequent Confidentiality Impact (SC): None
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Subsequent Integrity Impact (SI): None
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Subsequent Availability Impact (SA): None
Affected Vendors & Systems
Vendor
go-pay
References & Advisory Links
- https://github.com/go-pay/gopay/issues/540
- https://github.com/go-pay/gopay/commit/f6df04fd4f64a2ad2c303ba063b6502bfdd259fd
- https://github.com/go-pay/gopay/blob/v1.5.118/pkg/xhttp/client.go#L15-L37
- https://github.com/go-pay/gopay
- https://www.vulncheck.com/advisories/gopay-before-1.5.119-disabled-tls-certificate-verification-in-xhttp-client
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
VulnCheck
EPSS Probability
0
Known Aliases
CVE-2026-105218
Published On
2026-10-04
Last Updated
2026-10-04