CVE record
CVE-2026-40092
nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In versions 1.3.0 and below, a malicious network peer can crash any Nimiq full node by publishing a crafted Kademlia DHT record. The maliciously crafted record would contain a TaggedSigned<ValidatorRecord, KeyPair> with a signature field whose byte length is not exactly 64 in order to cause a crash. When the victim node's DHT verifier calls TaggedSigned::verify, execution reaches Ed25519Signature::from_bytes(sig).unwrap() in the TaggedPublicKey implementation for Ed25519PublicKey. The from_bytes call fails because ed25519_zebra::Signature::try_from rejects slices not 64 bytes, and the unwrap() panics. The BLS TaggedPublicKey implementation correctly returns false on error; only the Ed25519 implementation panics. This issue has been fixed in version 1.4.0.
Amazon picks for vulnerability response
Product discovery links are localized to Amazon US when country data is available.
This page may contain affiliate links. We may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases.
Hardware security keys
Physical MFA keys for admin accounts, cloud consoles, password managers, and incident response workflows.
Security engineering books
Books on secure design, incident response, threat modeling, cloud security, and practical defense.
Ethernet cable testers
Portable testers for validating office, rack, home lab, and troubleshooting cable runs.
Vulnerability metadata
- Published
- 2026-05-20T16:46:36.850Z
- Modified
- 2026-05-21T10:34:53.813Z
- EPSS
- Not available
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Recommended platforms
Affiliate-supported recommendations for CVE-2026-40092 vulnerability response.
This page may contain affiliate links. We may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases.
Security engineering books
Browse practical security, incident response, cloud security, and secure coding books for team learning.
Cloud security platform
Continuously review cloud posture, exposed services, identity risks, and misconfigurations.
Monitoring and incident response
Track uptime, logs, traces, TLS expiry, API latency, and production security signals.