Nimiq: Validity store off by one error

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-46369
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 20:17:23 UTC
Updated2026-08-27 17:18:25 UTC
DescriptionNimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Through 1.5.0, the validity store uses a strict lower-bound comparison that expires a stored transaction too early relative to Transaction::is_valid_at, allowing a remote attacker to replay the same signed transaction during a blocks_per_batch minus one block window and cause the sender and recipient balances to be updated twice. This issue is fixed in version 1.5.1.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.003920000 probability, percentile 0.320840000 (date 2026-08-27)

Problem Types: CWE-193 | CWE-294 | CWE-193 CWE-193: Off-by-one Error | CWE-294 CWE-294: Authentication Bypass by Capture-replay

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nimiq Core-rs-albatross affected < 1.5.1 Not specified

References

ReferenceSourceLinkTags
github.com/nimiq/core-rs-albatross/security/advisories/GHSA-3763-qp59-59vf [email protected] github.com
github.com/nimiq/core-rs-albatross/pull/3772 [email protected] github.com
github.com/nimiq/core-rs-albatross/commit/a530b2434ebca6e3716f07c7307978... [email protected] github.com
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