Dashboard / CVE-2026-44500

CVE-2026-44500

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 71/100
Published: 2026-05-08 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: Low

Description

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0, prior to zebra-chain version 7.0.0, and prior to zebra-network version 6.0.0, several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or post-handshake peer could therefore force the node to preallocate and parse for orders of magnitude more data than the protocol intended, across headers messages, equihash solutions in block headers, Sapling spend vectors in V5/V4 transactions, and coinbase script bytes in blocks. This issue has been patched in zebrad version 4.4.0, zebra-chain version 7.0.0, and zebra-network version 6.0.0.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
zfnd zebra-chain < 7.0.0
zfnd zebra-network < 6.0.0
zfnd zebrad < 4.4.0

References & Advisories (1)

Bug Bounty Relevance

71 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploitation Probability

0.36%
Raw Score 0.003620
Percentile 30.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00362
2026-10-28
0.00362

Intelligence Sources

nvd ref →

External Links