CVE-2026-34209

Published: Mar 31, 2026 Last Modified: Mar 31, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none

Description

AI Translation Available

mppx is a TypeScript interface for machine payments protocol. Prior to version 0.4.11, the tempo/session cooperative close handler validated the close voucher amount using '<' instead of '<=' against the on-chain settled amount. An attacker could submit a close voucher exactly equal to the settled amount, which would be accepted without committing any new funds, effectively closing or griefing the channel for free. This issue has been patched in version 0.4.11.

294

Authentication Bypass by Capture-replay

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
https://github.com/wevm/mppx/commit/94088246ee18f21b5d6be40…
https://github.com/wevm/mppx/commit/94088246ee18f21b5d6be40d9e7a464f5a280bfb
https://github.com/wevm/mppx/releases/tag/[email protected]
https://github.com/wevm/mppx/releases/tag/[email protected]
https://github.com/wevm/mppx/security/advisories/GHSA-mv9j-…
https://github.com/wevm/mppx/security/advisories/GHSA-mv9j-8jvg-j8mr