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GHSA-FXC9-7J2W-VX54

Vulnerability from github – Published: 2026-03-29 15:20 – Updated: 2026-03-29 15:20

Summary

mpp has multiple payment bypass and griefing vulnerabilities

Details

Impact

Multiple vulnerabilities were discovered which allowed for undesirable behaviors, including: - Performing free tempo/charge requests - Replaying existing tempo/charge requests - Performing free tempo/session requests - Piggybacking off existing tempo/session channels - Griefing existing tempo/session channels - Manipulate the fee payer of a tempo/charge or tempo/session handler into paying for requests - Replaying existing stripe/charge requests

Patches

The issues are patched in 0.8.0

Workarounds

There are no workarounds available for these vulnerabilities

Severity

9.3 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "mpp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-288",
      "CWE-294",
      "CWE-345"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-29T15:20:45Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\nMultiple vulnerabilities were discovered which allowed for undesirable behaviors, including:\n- Performing free `tempo/charge` requests\n- Replaying existing `tempo/charge` requests\n- Performing free `tempo/session` requests\n- Piggybacking off existing `tempo/session` channels\n- Griefing existing `tempo/session` channels\n- Manipulate the fee payer of a `tempo/charge` or `tempo/session` handler into paying for requests\n- Replaying existing `stripe/charge` requests\n\n### Patches\nThe issues are patched in 0.8.0\n\n### Workarounds\nThere are no workarounds available for these vulnerabilities",
  "id": "GHSA-fxc9-7j2w-vx54",
  "modified": "2026-03-29T15:20:45Z",
  "published": "2026-03-29T15:20:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tempoxyz/mpp-rs/security/advisories/GHSA-fxc9-7j2w-vx54"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tempoxyz/mpp-rs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tempoxyz/mpp-rs/releases/tag/v0.8.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "mpp has multiple payment bypass and griefing vulnerabilities"
}

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.

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