CVE Catalog

CVE-2026-110765

MediumCVSS 5.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.23%

12th percentile - higher than 12% of all known CVEs

Summary

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.

Risk Assessment

An attacker can manipulate payment status and invoices, leading to financial losses and disruption of the organization's billing.

Recommendation

Upgrade FlexPrice beyond 2.1.38 and enforce intuit-signature verification for all QuickBooks webhook requests.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS