AIKIDO-2026-10904
nimiq-block is vulnerable to Integer Overflow
96
Critical Risk
This Affects:
nimiq-blockTL;DR
Affected versions are vulnerable to an authentication bypass issue in SkipBlockProof::verify caused by improper handling of out-of-range BitSet indices. An attacker can craft signer indices that inflate quorum calculations while mapping to the same validator slot after type casting, potentially allowing a malicious validator with insufficient real signatures to forge a valid skip block proof.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
nimiq-block is vulnerable to Integer Overflow in versions 0.0.1 - 1.2.2.
How to fix this
Upgrade the nimiq-block library to the patch version.
Links
GitHub Release
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
FedRAMPImplementing© All Intel data is openly available and commercially licensed.