Detections
Analytics

CVE-2019-11636

high

Description

Zcash 2.x allows an inexpensive approach to "fill all transactions of all blocks" and "prevent any real transaction from occurring" via a "Sapling Wood-Chipper" attack.

References

https://twitter.com/dukeleto/status/1120467430118232066

https://github.com/zcash/zcash/issues/3955

https://saplingwoodchipper.github.io

Details

Source: Mitre, NVD

Published: 2019-05-01

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

EPSS

EPSS: 0.004