CVE-2026-105218 gopay before 1.5.119 Disabled TLS Certificate Verification in xhttp Client

Critical 9.1 Published Updated

Man-in-the-middle attackers can intercept and modify payment data due to disabled TLS certificate verification in the xhttp client.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-105218?

CVE-2026-105218 is a critical vulnerability in go-pay gopay, published on 4 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-295

Which versions are affected by CVE-2026-105218?

How do I fix CVE-2026-105218?

No fix has been published for CVE-2026-105218 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-105218 being exploited?

There is no known exploitation of CVE-2026-105218 in the wild and no public exploit code.

Sources

Also known as GHSA-8f6w-7m2h-mfwg.

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