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TI-2026-66076 Aliases CVE-2026-104434GHSA-fxgv-g76m-8hg2

Zebra before 8.0.0 Denial of Service via z_listunifiedreceivers RPC

Priority LOW 31CWE-617Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-617.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00307 23rd percentileScored 2026-11-07
Fix Fixed zebra (ZcashFoundation): 8.0.0, 4.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ZcashFoundationzebrabefore 8.0.08.0.0Patch availableCNA
ZcashFoundationzebrabefore 4.5.04.5.0Patch availableCNA
  • zebra VendorZcashFoundation Affected before 8.0.0 Fixed in 8.0.0 Patch available CNA
  • zebra VendorZcashFoundation Affected before 4.5.0 Fixed in 4.5.0 Patch available CNA

Remediation

  • Fix · CNA zebra (ZcashFoundation) Fixed in 8.0.0
  • Fix · CNA zebra (ZcashFoundation) Fixed in 4.5.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    ZcashFoundation zebra 4.5.0

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-66078 Zebra before 4.5.0 CPU Amplification via Uncapped getblocks/getheaders Locator LengthPriority LOW 28
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-104434
  2. 2026-10-03 Alias added: GHSA-fxgv-g76m-8hg2

References

Advisory 1

  • TI-2026-66079 Zebra before 4.4.0 Consensus Split via SIGHASH_SINGLE Missing-Output Handling CVSS 4.0HIGH 8.3
  • TI-2026-37850 ZEBRA: Mempool transaction admission denial via single-peer inbound queue saturation CVSS 3.1MEDIUM 5.3
  • TI-2026-71182 Improper block validation in Zebra gossip lets peers drop new blocks CVSS 4.0MEDIUM 6.3
  • TI-2026-29537 Zebra: addr/addrv2 Deserialization Resource Exhaustion CVSS 4.0MEDIUM 6.3
  • TI-2026-30136 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling CVSS 4.0CRITICAL 9.3
  • TI-2026-37853 ZEBRA: Consensus divergence via P2SH sigop undercount in pure-Rust disabled-opcode parser CVSS 4.0CRITICAL 9.3
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences