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GHSA-8MHJ-RFFC-RCVW

Vulnerability from github – Published: 2026-03-29 15:11 – Updated: 2026-03-31 18:51

Summary

mppx has Stripe charge credential replay via missing idempotency check

Details

Impact

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.

Patches

Fixed in 0.4.11. The server now checks the Idempotent-Replayed header and rejects replayed PaymentIntents.

Workarounds

There are no workarounds available for this vulnerability.

Severity

6.0 (Medium)


                  
                    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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "mppx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34210"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-697"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-29T15:11:30Z",
    "nvd_published_at": "2026-03-31T15:16:18Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThe `stripe/charge` payment method did not check Stripe\u0027s `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.",
  "id": "GHSA-8mhj-rffc-rcvw",
  "modified": "2026-03-31T18:51:18Z",
  "published": "2026-03-29T15:11:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34210"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wevm/mppx"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wevm/mppx/releases/tag/mppx%400.4.11"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wevm/mppx/releases/tag/mppx@0.4.11"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "mppx has Stripe charge credential replay via missing idempotency check"
}

CVE-2026-34210 (GCVE-0-2026-34210)

Vulnerability from cvelistv5 – Published: 2026-03-31 14:10 – Updated: 2026-03-31 18:53

Title

mppx has Stripe charge credential replay via missing idempotency check

Summary

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.

Severity

6 (Medium)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-31 18:50 UTC

CWE

CWE-697 - Incorrect Comparison

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/wevm/mppx/security/advisories/…	x_refsource_CONFIRM
https://github.com/wevm/mppx/commit/b2b1a0b60506f…	x_refsource_MISC
https://github.com/wevm/mppx/releases/tag/mppx@0.4.11	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
wevm	mppx	Affected: < 0.4.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34210",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T18:50:24.072789Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-31T18:53:01.611Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mppx",
          "vendor": "wevm",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.4.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "mppx is a TypeScript interface for machine payments protocol. Prior to version 0.4.11, the stripe/charge payment method did not check Stripe\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-697",
              "description": "CWE-697: Incorrect Comparison",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-31T14:10:10.463Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw"
        },
        {
          "name": "https://github.com/wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994"
        },
        {
          "name": "https://github.com/wevm/mppx/releases/tag/mppx@0.4.11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wevm/mppx/releases/tag/mppx@0.4.11"
        }
      ],
      "source": {
        "advisory": "GHSA-8mhj-rffc-rcvw",
        "discovery": "UNKNOWN"
      },
      "title": "mppx has Stripe charge credential replay via missing idempotency check"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34210",
    "datePublished": "2026-03-31T14:10:10.463Z",
    "dateReserved": "2026-03-26T15:57:52.324Z",
    "dateUpdated": "2026-03-31T18:53:01.611Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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