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.

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Juspay
  • Hyperswitch

No data.

No data.

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

Fri, 30 Oct 2026 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Juspay
Juspay hyperswitch
Vendors & Products Juspay
Juspay hyperswitch

Fri, 30 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 30 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
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.
Title Hyperswitch through 1.128.0 Missing Authorization in Payout Confirmation
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.2, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-30T11:30:52.245Z

Updated: 2026-10-30T15:55:12.805Z

Reserved: 2026-10-30T02:41:12.548Z

Link: CVE-2026-119421

cve-icon Vulnrichment

Updated: 2026-10-30T15:20:57.752Z

cve-icon NVD

Status : Deferred

Published: 2026-10-30T12:16:38.887

Modified: 2026-10-30T19:23:25.493

Link: CVE-2026-119421

cve-icon Redhat

No data.