{"apiVersion":"1.0","identifier":"CVE-2026-52733","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.","publishedAt":"2026-08-18T20:17:16","lastModifiedAt":"2026-08-19T16:17:45","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52733","cvssScore":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L","epssProbability":0.00335,"riskScore":0.67,"affectedProduct":"Zebra","affectedVersions":"<4.5.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-52733","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-52733","en":"https://www.redsauce.net/en/cves/CVE-2026-52733","fr":"https://www.redsauce.net/fr/cves/CVE-2026-52733","pt":"https://www.redsauce.net/pt/cves/CVE-2026-52733","de":"https://www.redsauce.net/de/cves/CVE-2026-52733","sk":"https://www.redsauce.net/sk/cves/CVE-2026-52733","el":"https://www.redsauce.net/el/cves/CVE-2026-52733"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-52733"}}