CVE-2026-119422

MEDIUM 5.9

Hyperswitch before 1.128.0 Webhook Authentication Bypass via Worldpayxml Connector

CVSS Score

5.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-345
Vendor	juspay
Product	hyperswitch
Published	Oct 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

juspay / hyperswitch

0 < 1.128.0 0 < 2026.10.01.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/juspay/hyperswitch/commit/681cf96bbc888239daf669a71b0554e934210ee3 github.com: https://github.com/juspay/hyperswitch/commit/e797b36a1af204f4e4820c4938c6e4b10e9ae4fa github.com: https://github.com/juspay/hyperswitch/blob/v1.127.0/crates/hyperswitch_connectors/src/connectors/worldpayxml.rs#L1391-L1392 github.com: https://github.com/juspay/hyperswitch/releases/tag/v1.128.0 abraxaslabs.tech: https://abraxaslabs.tech/research/hyperswitch-unsigned-webhook github.com: https://github.com/juspay/hyperswitch vulncheck.com: https://www.vulncheck.com/advisories/hyperswitch-before-1.128.0-webhook-authentication-bypass-via-worldpayxml-connector

Credits

Abraxas Labs Nithin N