CVE-2026-48486

Published: Sep 3, 2026Modified: Sep 9, 2026Deferred

7.5

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

Exploitability: 2.2 / Impact: 4.7

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (2)

https://github.com/signum-network/signum-node/releases/tag/v3.9.9

Source: security-advisories@github.com

https://github.com/signum-network/signum-node/security/advisories/GHSA-4vjp-2m22-r2q9

Source: security-advisories@github.com

Timeline

No history available yet.