Security Advisory

CVE-2026-48486

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-03 15:22:35

Last updated 2026-09-03 18:00:18

Assigner GitHub_M

CVSS score 7.5

State PUBLISHED

Description

Signum Node is a HDD-mined cryptocurrency using an energy efficient and fair Proof-of-Commitment (PoC+) consensus algorithm. Prior to version 3.9.9, an integer overflow in BlockServiceImpl.applyBlock() allowed a miner to receive an arbitrarily inflated block reward by crafting a block with a negative totalFeeCashBackNqt value. The vulnerability was introduced when the SMART_FEES hardfork (block ~1,029,000) enabled fee cash-back and burn accounting without overflow protection. This issue has been patched in version 3.9.9.

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