GHSA-47j7-v7c6-f9jgHighCVSS 7.5
ZcashFoundation Zebra 6.4.0 before 6.4.2 parses version 6 transactions carrying a pre-NU6.3...
🔗 CVE IDs covered (1)
📋 Description
ZcashFoundation Zebra 6.4.0 before 6.4.2 parses version 6 transactions carrying a pre-NU6.3 consensus branch ID, but the size computation during UnminedTx construction treats re-serialization of the Orchard bundle as infallible, so the resulting error trips an expect that aborts zebrad. Unauthenticated peers can send a single pre-handshake tx message to crash the node, and can repeat this after each restart.
🔗 References (5)
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-h5rr-8pqv-grp9
- https://nvd.nist.gov/vuln/detail/CVE-2026-109363
- https://github.com/ZcashFoundation/zebra/commit/008abac5c99e872f283450d596d95e37851df49a
- https://www.vulncheck.com/advisories/zebra-6.4.0-before-6.4.2-denial-of-service-via-malformed-v6-transaction
- https://github.com/advisories/GHSA-47j7-v7c6-f9jg