CVE-2026-110765
FlexPrice through 2.1.38 contains an authentication bypass vulnerability in HandleQuickBooksWebhook that skips signature verification when the intuit-signature header is omitted. Unauthenticated attackers knowing a tenant and environment ID can replay forged payment notifications to repeatedly add payment amounts, marking invoices paid or overpaid.
Published:Oct 14, 2026
Last Modified:Oct 26, 2026
EPS:Oct 14, 2026
EPSS Score:0.00225
CVSS Score:5.9
Affected Products
Vendor
Product
Action
Vendor
Flexprice
Product
Flexprice
Flexprice
Flexprice
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
