HIGH 8.2 NVD
CVE-2026-110765
FlexPrice through 2.1.38 contains an authentication bypass vulnerability in HandleQuickBooksWebhook that skips signature verification when the intuit-signature
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.
References
- https://github.com/flexprice/flexprice
- https://github.com/flexprice/flexprice/blob/f27da32f84ee34bad4bf39a8d887af87fc3f30fc/inter
- https://hackmd.io/@hieuPenguinnn/flexprice-quickbooks-webhook-signature-bypass
- https://www.vulncheck.com/advisories/flexprice-through-2.1.38-quickbooks-webhook-signature
This high severity vulnerability with a CVSS score of 8.2 was published on 2026-10-14 via NVD.
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