CVE-2026-110765CWE-347

CVE-2026-110765

Medium · published October 14, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
12.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
8.2 · 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
EPSS
0.00225 · 12.5th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-10-14T23:17Z
References (4)
https://github.com/flexprice/flexprice · [email protected]https://github.com/flexprice/flexprice/blob/f27da32f84ee34bad4bf39a8d887af87fc3f30fc/internal/api/v1/webhook.go#L750 · [email protected]https://hackmd.io/@hieuPenguinnn/flexprice-quickbooks-webhook-signature-bypass · [email protected]https://www.vulncheck.com/advisories/flexprice-through-2.1.38-quickbooks-webhook-signature-verification-bypass · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 18:47Z
    FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass
    cvelistv5
  • 14 OCT 18:47Z
    FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass
    cvelistv5