5.9
MediumCVSS 3.1 · from VulnCheck
CVE-2026-119421
Hyperswitch through 1.128.0 Missing Authorization in Payout Confirmation
hyperswitch · Authorization bypass via user key · CWE-639Affectedhyperswitch
FixUpdate to 2026.10.19.0 or newer
PublishedOct 30, 11:30 · VulnCheck
ScoredOct 30 · 5.9 · VulnCheck
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:09 UTC
What we know
No known exploitation. CISA KEV, checked 22:09 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
It only works under certain conditions, which makes it harder to pull off. CVSS: high attack complexity.
A successful attack can change data. CVSS impact.
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.
From VulnCheck
Affected and fixed versions
ProductAffectedFixed inhyperswitchup to 1.128.0–hyperswitchbefore 2026.10.19.02026.10.19.0
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known