Vulnerability in juspay hyperswitch

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• abraxaslabs.tech/research/hyperswitch-payout-confirm-secret
• github.com/juspay/hyperswitch
• github.com/juspay/hyperswitch/blob/2026.09.21.0/crates/router/src/core/payouts/helpers.rs
• github.com/juspay/hyperswitch/blob/v1.128.0/crates/router/src/services/authentication.rs
• github.com/juspay/hyperswitch/commit/607b15fcc4b7dae71c2aafb8c004eea333ac6fd8
• github.com/juspay/hyperswitch/commit/f1144ec5c7e38b3b048fe797fad57e743041f345
• www.vulncheck.com/advisories/hyperswitch-through-1.128.0-missing-authorization-in-payou…