What is CVE-2026-46540?

CVE-2026-46540 is a medium-severity vulnerability in Nimiq Core-rs-albatross, classified under Improper Enforcement of Behavioral Workflow. CVSS score: 6.5/10. Published 2026-06-10.

How severe is CVE-2026-46540?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Nimiq Core-rs-albatross

CVE-2026-46540

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch() adopts a fork chain whose tip is a macro block (checkpoint or election…

EPSS: 0.003 (17.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Nimiq Core-rs-albatross — versions < 1.4.0

Weakness classification (CWE)

CWE-841 — Improper Enforcement of Behavioral Workflow

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-46540?: CVE-2026-46540 is a medium-severity vulnerability in Nimiq Core-rs-albatross, classified under Improper Enforcement of Behavioral Workflow. CVSS score: 6.5/10. Published 2026-06-10.
How severe is CVE-2026-46540?: Medium severity. CVSS v3 base score is 6.5 out of 10.