{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110765","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-14T17:27:32.591Z","datePublished":"2026-10-14T18:47:41.613Z","dateUpdated":"2026-10-14T18:47:41.613Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-14T18:47:41.613Z"},"datePublic":"2026-10-14T00:00:00.000Z","title":"FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Verification of Cryptographic Signature","cweId":"CWE-347","type":"CWE"}]}],"affected":[{"vendor":"flexprice","product":"flexprice","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"2.1.38","status":"affected","versionType":"semver"}],"collectionURL":"https://github.com/flexprice/flexprice","repo":"https://github.com/flexprice/flexprice"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://hackmd.io/@hieuPenguinnn/flexprice-quickbooks-webhook-signature-bypass","tags":["technical-description","exploit"]},{"url":"https://github.com/flexprice/flexprice/blob/f27da32f84ee34bad4bf39a8d887af87fc3f30fc/internal/api/v1/webhook.go#L750","tags":["technical-description"]},{"url":"https://github.com/flexprice/flexprice","tags":["product"]},{"name":"VulnCheck Advisory: FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/flexprice-through-2.1.38-quickbooks-webhook-signature-verification-bypass"}],"credits":[{"lang":"en","value":"hieuPenguinnn","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}