CVE-2026-44499Disclosure

LOWCVSS 8.7 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-08: 2Patch / Workaround · 2026-05-08: 1Technical Details · 2026-05-08: 105-08
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • DailyCVE@dailycve
    General

    🔴 Zebra, Denial-of-Service (DoS), #CVE-2026-44499 (Critical) https://dailycve.com/zebra-denial-of-service-dos-cve-2026-44499-critical/

    Post summary

    The post merely lists CVE‑2026‑44499 as a critical DoS vulnerability and links to an external site, providing no further technical, exploit, or mitigation details.

    0000032
    198 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-44499 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 unau… https://www.cve.org/CVERecord?id=CVE-2026-44499

    Post summary

    The text announces a denial‑of‑service vulnerability (CVE‑2026‑44499) affecting Zebra before version 4.4.0, with the implication that upgrading mitigates the issue.

    0000071
    57.5K followersView on X

Explore more