PT-2026-34545 · Unknown · Nimiq-Account

Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-34064

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions nimiq-account versions prior to 1.3.0

Description The VestingContract::can change balance() function returns AccountError::InsufficientFunds when new balance is less than min cap, but it calculates the error balance using self.balance - min cap. Because Coin::sub panics on underflow, a node crashes if min cap is greater than balance. This state is reachable because the vesting contract creation data in 32-byte format allows encoding total amount without validating that it is less than or equal to the actual contract balance (transaction.value). An attacker can create such a contract and broadcast an outgoing transaction to trigger the panic during block processing and mempool admission.

Recommendations Update to version 1.3.0.

Fix

Integer Underflow

Weakness Enumeration

CWE-191

Related Identifiers

CVE-2026-34064

GHSA-VC34-39Q2-M6Q3

Affected Products

Nimiq-Account

References · 8

• https://github.com/nimiq/core-rs-albatross/pull/3658 · Patch
• https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3 · Vendor Advisory
• https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0 · Patch
• https://osv.dev/vulnerability/GHSA-vc34-39q2-m6q3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34064 · Security Note
• https://github.com/nimiq/core-rs-albatross · Note
• https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 · Note
• https://twitter.com/CVEnew/status/2047359958048461308 · Twitter Post