{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-34210",
        "tracking": {
            "current_release_date": "2026-04-03T16:29:10.044305Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-34210",
            "initial_release_date": "2026-03-29T16:13:03.157855Z",
            "revision_history": [
                {
                    "date": "2026-03-29T16:13:03.157855Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)."
                },
                {
                    "date": "2026-03-29T16:13:07.792712Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-31T14:40:01.316452Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-31T14:40:03.389159Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T15:26:51.521548Z",
                    "number": "5",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-31T15:26:53.326416Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T15:50:55.465174Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T19:38:51.033301Z",
                    "number": "8",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-31T19:55:23.427809Z",
                    "number": "9",
                    "summary": "References created (2)."
                },
                {
                    "date": "2026-04-01T15:13:04.012433Z",
                    "number": "10",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-04-03T16:25:57.610394Z",
                    "number": "11",
                    "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1)."
                },
                {
                    "date": "2026-04-03T16:26:03.660035Z",
                    "number": "12",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "12"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<0.4.11",
                                "product": {
                                    "name": "vers:unknown/<0.4.11",
                                    "product_id": "CSAFPID-5968877",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:wevm:mppx:*:*:*:*:*:node.js:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "mppx"
                    }
                ],
                "category": "vendor",
                "name": "wevm"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-34210",
            "notes": [
                {
                    "category": "description",
                    "text": "### Impact\n\nThe `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.\n\n### Patches\n\nFixed in 0.4.11. The server now checks the `Idempotent-Replayed` header and rejects replayed PaymentIntents.\n\n### Workarounds\n\nThere are no workarounds available for this vulnerability.",
                    "title": "github - https://api.github.com/advisories/GHSA-8mhj-rffc-rcvw"
                },
                {
                    "category": "description",
                    "text": "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.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34210.json"
                },
                {
                    "category": "description",
                    "text": "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.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34210"
                },
                {
                    "category": "other",
                    "text": "0.0004",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "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",
                    "title": "CVSSV4"
                },
                {
                    "category": "other",
                    "text": "6.0",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "4.5",
                    "title": "NCSC Score"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5968877"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-8mhj-rffc-rcvw"
                },
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34210.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34210"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/wevm/mppx/releases/tag/mppx%400.4.11"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-8mhj-rffc-rcvw"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/wevm/mppx/releases/tag/mppx@0.4.11"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34210"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
                        "baseScore": 8.1,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-5968877"
                    ]
                }
            ],
            "title": "CVE-2026-34210"
        }
    ]
}