CVE-2026-119421

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://abraxaslabs.tech/research/hyperswitch-payout-confirm-secret
https://github.com/juspay/hyperswitch
https://github.com/juspay/hyperswitch/blob/2026.09.21.0/crates/router/src/core/payouts/helpers.rs#L1465
https://github.com/juspay/hyperswitch/blob/v1.128.0/crates/router/src/services/authentication.rs#L5921-L5927
https://github.com/juspay/hyperswitch/commit/607b15fcc4b7dae71c2aafb8c004eea333ac6fd8
https://github.com/juspay/hyperswitch/commit/f1144ec5c7e38b3b048fe797fad57e743041f345
https://www.vulncheck.com/advisories/hyperswitch-through-1.128.0-missing-authorization-in-payout-confirmation

Configurations

No configuration.

History

30 Oct 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 12:16

Updated : 2026-10-30 19:23

NVD link : CVE-2026-119421

Mitre link : CVE-2026-119421

CVE.ORG link : CVE-2026-119421

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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