CVE-2026-52733 - ZEBRA: Persistent on-disk corruption of Sapling/Orchard subtree roots after chain fork via pop_tip

CVE-2026-52733 - ZEBRA: Persistent on-disk corruption of Sapling/Orchard subtree roots after chain fork via pop_tip

https://cvefeed.io/rssfeed/latest.atom / Tue, 08/18/2026 - 22:27
CVE ID :CVE-2026-52733
Published : Aug. 18, 2026, 7:24 p.m. | 36 minutes ago
Description :ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a natural or attacker-influenced chain fork can leave stale Sapling and Orchard note-commitment subtree roots in Zebra state. In zebra-state/src/service/non_finalized_state/chain.rs, Chain::pop_tip removed a reverted tip block but did not remove subtree entries whose end_height belonged to that block, unlike the cleanup performed by pop_root. When the winning fork later finalized, the abandoned branch's stale subtree data could be written to RocksDB and survive node restarts. The corrupted history can cause z_getsubtreesbyindex consumers such as lightwalletd and light wallets to receive incorrect subtree roots, producing wallet synchronization failures or incorrect wallet state and requiring a full state rebuild for recovery. This issue is fixed in version 4.5.0.
Severity: 0.0 | NA
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