CVE-2026-104428Zebra before 11.0.0 Denial of Service via getblock Verbosity 2
Updated under an hour ago ()
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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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The getblock RPC method in zebra-rpc before 11.0.0, used by the Zcash Foundation's Zebra node, panics on verbosity 2 for a side-chain block because the block's -1 confirmations sentinel is converted to u32 with .expect(), aborting the process. Remote unauthenticated attackers, directly or through lightwalletd, can repeat this call to keep the node in a crash loop.
- 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-617
- 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 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ZcashFoundation zebra zcashfoundation:zebra (from the name) | before 11.0.0; 11.0.0 not affected | CNA record |
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-x6v8-c2xp-928mvendor-advisory
- https://www.vulncheck.com/advisories/zebra-before-11.0.0-denial-of-service-via-getblock-verbosity-2third-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.