Security Announcement Information

Version 2.0.4 of Zcashd includes a fix for the bug described here (https://z.cash/support/security/announcements/security-announcement-2019-03-19/). Users should install this update and then […]

Synopsis: A bug in the Zcashd wallet could result in Sprout z-addresses displaying an incorrect balance. Sapling z-addresses are not […]

We have updated the version of libzmq that we use to one that has a fix for the issue CVE-2019-6250. […]

We have fixed a counterfeiting vulnerability that affected Zcash prior to the Sapling network update. We have published a blog […]

A bug related to transaction priority handling may allow an attacker to crash Zcash nodes (DoS) via a specially crafted […]

We have identified a vulnerability in the Zcash client. We have not seen any evidence of this vulnerability being exploited […]

We have deployed detectors to learn more about the issue and still have no evidence of malicious exploitation. We are […]

Users that are still running older versions of Zcash (in particular,

The zcashd 1.0.3 release fixed a cache invalidation bug which an attacker could leverage to trigger a network fork. Mitigations […]

There was a brief DDoS attack yesterday. Our website was down for a bit while we engaged DDoS defenses.

This log will track important security announcements, please check back for updates.