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Vulnerability IntelligenceGHSA-fxc9-7j2w-vx54

GHSA-fxc9-7j2w-vx54

CRITICAL9.3

mpp has multiple payment bypass and griefing vulnerabilities

Published Mar 29, 2026

Modified 2 weeks ago

Fix available

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

Affected Packages

mpp

crates.io

Fixed in:

0.8.0

References

https://github.com/advisories/GHSA-fxc9-7j2w-vx54

https://github.com/tempoxyz/mpp-rs

https://github.com/tempoxyz/mpp-rs/releases/tag/v0.8.0

https://github.com/tempoxyz/mpp-rs/security/advisories/GHSA-fxc9-7j2w-vx54

CVSS Analysis

CVSS v4.0

9.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

HighVI:H

Vuln. Availability

NoneVA:N

Subsequent System

Subseq. Confidentiality

HighSC:H

Subseq. Integrity

HighSI:H

Subseq. Availability

NoneSA:N

9.3/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

Ecosystems

Timeline

PublishedMar 29, 2026

ModifiedMar 29, 2026

GHSA-fxc9-7j2w-vx54 | Mondoo Vulnerability Intelligence