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Advisories

FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass

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Severity
high
Date
Affecting

  • flexprice <= 2.1.38

CWE
  • CWE-347 Improper Verification of Cryptographic Signature
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
hieuPenguinnn
Description
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.

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