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Advisories

Hyperswitch through 1.128.0 Missing Authorization in Payout Confirmation

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Severity
high
Date
Affecting

  • hyperswitch <= 1.128.0

  • hyperswitch >= 0, < 2026.10.19.0

CWE
  • CWE-639 Authorization Bypass Through User-Controlled Key
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
Abraxas Labs, Sakil Mostak
Description
Juspay Hyperswitch through 1.128.0 (and builds before 2026.10.19.0) contains a missing authorization vulnerability that allows unauthenticated attackers to confirm payouts with any client_secret via POST /payouts/{payout_id}/confirm. Attackers holding the merchant's publishable key and a payout_id can confirm payouts and overwrite amount, currency, connector, and routing fields to trigger unauthorized merchant payouts.

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