{"cve":"CVE-2026-34210","nvd":{"published":"2026-03-31T15:16:18.207","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"mppx is a TypeScript interface for machine payments protocol. Prior to version 0.4.11, the stripe/charge payment method did not check Stripe's Idempotent-Replayed response header when creating PaymentIntents. An attacker could replay a valid credential containing the same spt token against a new challenge, and the server would accept the replayed Stripe PaymentIntent as a new successful payment without actually charging the customer again. This allowed an attacker to pay once and consume unlimited resources by replaying the credential. This issue has been patched in version 0.4.11.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":6.0},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":8.1},"cwes":["CWE-697"],"references":["https://github.com/wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994","https://github.com/wevm/mppx/releases/tag/mppx@0.4.11","https://github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw"],"products":["wevm:mppx"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-34210","score":0.00513,"percentile":0.43752,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8mhj-rffc-rcvw","url":"https://osv.dev/vulnerability/GHSA-8mhj-rffc-rcvw","summary":"mppx has Stripe charge credential replay via missing idempotency check","modified":"2026-03-31T19:05:06.644346Z","packages":[{"ecosystem":"npm","name":"mppx","purl":"pkg:npm/mppx","ranges":["<0.4.11"],"fixed":["0.4.11"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}