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GHSA-fxc9-7j2w-vx54

mpp has multiple payment bypass and griefing vulnerabilities

Published
Mar 29, 2026
Updated
Mar 29, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🦀mpp

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

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

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iomppall versions0.8.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mpp. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update mpp to 0.8.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fxc9-7j2w-vx54 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-fxc9-7j2w-vx54 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-fxc9-7j2w-vx54. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### 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
O3 Security · Impact-Aware SCA

Is GHSA-fxc9-7j2w-vx54 in your dependencies?

O3 detects GHSA-fxc9-7j2w-vx54 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.