Authorization bypass through user-controlled key in Flowise - CVE-2026-70476
Published: July 30, 2026
Vulnerability identifier: #VU140082
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70476
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to manipulate another organization's Stripe subscription.
The vulnerability exists due to authorization bypass through a user-controlled key in the organization billing endpoints when processing attacker-supplied subscription identifiers. A remote attacker can send crafted requests with a victim organization's subscriptionId to manipulate another organization's Stripe subscription.
This affects cross-tenant billing operations including subscription plan changes and seat quantity updates.
Affected software
Flowise
How to mitigate CVE-2026-70476
Install security update from vendor's website.
Flowise - update to 3.1.3