Medium 5.3Published Oct 2, 2026

CVE-2026-104425Zebra before 6.1.0 Batch-Verification Poisoning DoS via Unattributed Pushed Transactions

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects ZcashFoundation zebra. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for ZcashFoundation zebra

Exploited in the last 30 days

ZcashFoundation Zebra before 6.1.0 contains a resource exhaustion vulnerability that allows unauthenticated peers to degrade block processing by pushing transactions with invalid Orchard proofs without being misbehavior-scored. Attackers can repeatedly push invalid proofs into the shared halo2 batch verifier, forcing honest block proofs onto the slow individual-verification path and slowing block processing roughly sevenfold.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-405
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 2, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ZcashFoundation zebra zcashfoundation:zebra (from the name)	before 6.1.0; 6.1.0 not affected	CNA record

References

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-g7c4-2w6c-cr3rvendor-advisory
https://www.vulncheck.com/advisories/zebra-before-6.1.0-batch-verification-poisoning-dos-via-unattributed-pushed-transactionsthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.