New API: Stripe Webhook Signature Bypass via Empty Secret Enables Unlimited Quota Fraud

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0085, the 58th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:06 UTC First seen by agentprime
2. 31 Oct 2026, 15:06 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-xff3-5c9p-2mr4
• OSV: GHSA-xff3-5c9p-2mr4
• github.com/QuantumNous/new-api/security/advisories/GHSA-xff3-5c9p-2mr4
• nvd.nist.gov/vuln/detail/CVE-2026-41432
• docs.stripe.com/checkout/fulfillment#async-payment-methods
• docs.stripe.com/webhooks#verify-official-libraries
• github.com/QuantumNous/new-api
• github.com/QuantumNous/new-api/releases/tag/v0.12.10

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.