Vulnerability in Zcashfoundation Zebra
CVE-2026-104434
ZcashFoundation Zebra zebra-rpc before 8.0.0 and zebrad before 4.5.0 contain a reachable assertion in the z_listunifiedreceivers RPC handler, which calls expect() on Sapling receiver parsing that fails for Unified Addresses carrying invalid Jubjub points. Authenticated RPC clients can submit such an address to abort the zebrad process, repeatably keeping the node offline.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/ZcashFoundation/zebra/security/advisories/GHSA-c8w6-x74f-vmg3 (vendor-advisory)
- www.vulncheck.com/advisories/zebra-before-8.0.0-denial-of-service-via-z-listuni… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-104434?
- CVE-2026-104434 is a medium-severity vulnerability in Zcashfoundation Zebra, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-10-02.
- How severe is CVE-2026-104434?
- Medium severity. CVSS v3 base score is 6.5 out of 10.