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TI-2026-83000 Aliases CVE-2026-119421GHSA-r242-wmj3-v8wv

Missing authorization in Hyperswitch lets attackers confirm payouts

Priority LOW 36CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Juspay Hyperswitch through 1.128.0 and builds before 2026.10.19.0 contain a missing authorization flaw in payout confirmation (CWE-639). An unauthenticated attacker who holds the merchant's publishable key and a payout_id can confirm payouts using any client_secret. The attacker can also overwrite amount, currency, connector and routing fields to trigger unauthorized merchant payouts.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0034 27th percentileScored 2026-11-07
Fix Fixed hyperswitch (juspay): 2026.10.19.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
juspayhyperswitchup to 1.128.0; before 2026.10.19.02026.10.19.0Patch availableCNA
  • hyperswitch Vendorjuspay Affected up to 1.128.0; before 2026.10.19.0 Fixed in 2026.10.19.0 Patch available CNA

Remediation

Upgrade Juspay Hyperswitch to 2026.10.19.0, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA hyperswitch (juspay) Fixed in 2026.10.19.0

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-119421
  2. 2026-10-30 Alias added: GHSA-r242-wmj3-v8wv
  3. 2026-10-30 CISA SSVC decision points changed
  4. 2026-10-30 Priority changed: MEDIUM → LOW

References

Patch 2

Advisory 1

Other 3

  • TI-2026-83001 Authentication bypass in Juspay Hyperswitch Worldpayxml webhooks CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences