Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- 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/p
- https://github.com/juspay/hyperswitch/blob/v1.128.0/crates/router/src/services/a
- https://github.com/juspay/hyperswitch/commit/607b15fcc4b7dae71c2aafb8c004eea333a
- https://github.com/juspay/hyperswitch/commit/f1144ec5c7e38b3b048fe797fad57e74304
- https://www.vulncheck.com/advisories/hyperswitch-through-1.128.0-missing-authori
FAQ
What is CVE-2026-119421?
CVE-2026-119421 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 P...
How severe is CVE-2026-119421?
CVE-2026-119421 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119421?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.