CVE-2026-34063: Peer can crash the node by opening discovery protocol substream twice

Peer can crash the node by opening discovery protocol substream twice

F-NIMIQ-DISCOVERY-DOUBLE-SUBSTREAM-PANIC-001

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

Recorded evidence

7.5high

CVE-2026-34063CVEnimiq/core-rs-albatross

Peer can crash the node by opening discovery protocol substream twice

Fixed in: network-libp2p v1.3.0

patched

details

Finding IDs: F-NIMIQ-DISCOVERY-DOUBLE-SUBSTREAM-PANIC-001
CVE: CVE-2026-34063
GHSA: GHSA-74hp-mhfx-m45h
Status: patched
Fixed in: network-libp2p v1.3.0
Recorded credit: finder: @1seal
Note: GHSA-74hp-mhfx-m45h; patched in v1.3.0 via PR #3666 / release v1.3.0
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE registry state: PUBLISHED
CVE state checked: 23 Sep 2026
Upstream title: Peer can crash the node by opening discovery protocol substream twice
Upstream CWE: CWE-617
Upstream publication: 22 Apr 2026
Upstream updated: 22 Apr 2026
Metadata fetched: 23 Sep 2026
Upstream @1seal credit: @1seal: finder (accepted)

F-NIMIQ-DISCOVERY-DOUBLE-SUBSTREAM-PANIC-001: Input / state handling. A repeated discovery substream violates an assumed state and panics. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-NIMIQ-DISCOVERY-DOUBLE-SUBSTREAM-PANIC-001

Security area (1seal assessment): Availability. A repeated discovery substream violates an assumed state and panics. Reviewed 24 Sep 2026.

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