Operation on a Resource after Expiration or Release Affecting zebrad package, versions <4.5.0
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- published3 Jul 2026
- disclosed2 Jul 2026
- creditUnknown
Introduced: 2 Jul 2026
NewCVE-2026-52733 (opens in a new tab)How to fix?
Upgrade zebrad to version 4.5.0 or higher.
Overview
zebrad is a The Zcash Foundation's independent, consensus-compatible implementation of a Zcash node
Affected versions of this package are vulnerable to Operation on a Resource after Expiration or Release in the pop_tip process. An attacker can cause persistent corruption of subtree root data by triggering chain forks and subsequent block reverts, leading to incorrect wallet synchronization or wallet state for downstream consumers. This is only exploitable if the node participates in a network where chain forks occur and the default configuration is used.
Workaround
This vulnerability can be mitigated by periodically verifying subtree root consistency using z_getsubtreesbyindex against a known-good reference.