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GHSA-fxc9-7j2w-vx54 — Vulnerability in mpp — Advisory Details

CRITICAL

mpp has multiple payment bypass and griefing vulnerabilities

Published March 29, 2026Updated March 29, 2026Source: osv

Summary

### 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

Advisory Timeline

  • First published March 29, 2026 (197 days ago).
  • Last revised March 29, 2026 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update mpp to 0.8.0 or later
cargo update -p mpp --precise 0.8.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
mpp
crates.io
All versions0.8.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 10.0 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

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

References

Frequently Asked Questions

What is GHSA-fxc9-7j2w-vx54?
mpp has multiple payment bypass and griefing vulnerabilities This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 10.0/10).
How do I check if my project is affected by GHSA-fxc9-7j2w-vx54?
GHSA-fxc9-7j2w-vx54 affects mpp. Use GeekWala's free vulnerability scanner to check your dependencies against GHSA-fxc9-7j2w-vx54 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
10.0

Exploitation is straightforward and causes maximum impact. Patch immediately.

Related CVEs

More crates.io advisories

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