CVE•Published 2026-05-08•Modified 2026-05-08•0 articles on news•5 live references•NVD data

CVE-2026-44498Zfnd · Zebrad

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS percentile

—

Weaknesses (CWE)

CWE-682Incorrect Calculation

Description

ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit (MAX_BLOCK_SIGOPS), allowing it to accept blocks that zcashd rejects with bad-blk-sigops. A miner who produces such a block can split the network: Zebra nodes follow the offending chain while zcashd nodes do not. This issue has been patched in version 4.4.0.

Timeline

Published 2026-05-08

Modified 2026-05-08

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-44498

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Zfnd Zebrad"

All exposed Zfnd Zebrad instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Zebrad"

HTTP body or banner mentions "Zebrad" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-44498