요약
- CVE-2026-34209은(는) mppx (wevm), mppx에 영향을 주는 높음 (CVSS 7.5) 취약점입니다.
- 향후 30일 내 악용 확률(EPSS): 0.37%, 전체 취약점의 31.4%보다 높음.
- 조치: 0.4.11 이상으로 업데이트하세요.
| Package | Affected versions | Patched versions |
|---|
| mppx | < 0.4.11
| 0.4.11
|
| mppx npm | < 0.4.11
| 0.4.11
|
Description
Impact
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.
Patches
Fixed in 0.4.11.
Workarounds
There are no workarounds available for this vulnerability.
NVD description
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.
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