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CVE-2026-44499

8.7 Élevée

Publiée le 08/05/2026 à 18:16 · Modifiée le 17/06/2026 à 12:50 · Analyse NVD reportée · Source : security-advisories@github.com

Description

ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, a composite denial-of-service vulnerability in Zebra's block discovery pipeline allows an unauthenticated remote attacker to permanently halt all new block discovery on a targeted node. The attack exploits three independent weaknesses in the gossip, syncer, and download subsystems — all exercisable from a single TCP connection — to create a monotonically growing block deficit that never self-heals. This issue has been patched in version 4.4.0.

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
4.0 8.7 Élevée security-advisories@github.com CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Faiblesses (CWE)

Références

Ailleurs