Description
Juspay Hyperswitch before 1.128.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge payment status updates because the Worldpayxml connector's verify_webhook_source always returns true without enforced mTLS. Attackers knowing the merchant_id and Worldpay orderCode can POST unsigned XML with lastEvent SETTLED to the worldpayxml webhook endpoint, marking unpaid payments as charged or triggering refund, dispute and payout events.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
juspay hyperswitch
Default version status: unaffected
0 to < 1.128.0affected0 to < 2026.10.01.0affected
References
- https://github.com/juspay/hyperswitch/commit/681cf96bbc888239daf669a71b0554e934210ee3 ↗
- https://github.com/juspay/hyperswitch/commit/e797b36a1af204f4e4820c4938c6e4b10e9ae4fa ↗
- https://github.com/juspay/hyperswitch/blob/v1.127.0/crates/hyperswitch_connectors/src/connectors/worldpayxml.rs#L1391-L1392 ↗
- https://github.com/juspay/hyperswitch/releases/tag/v1.128.0 ↗
- https://abraxaslabs.tech/research/hyperswitch-unsigned-webhook ↗
- https://github.com/juspay/hyperswitch ↗
- https://www.vulncheck.com/advisories/hyperswitch-before-1.128.0-webhook-authentication-bypass-via-worldpayxml-connector ↗