What is CVE-2026-46539?

CVE-2026-46539 is a medium-severity vulnerability in Nimiq Core-rs-albatross, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.9/10. Published 2026-06-10.

How severe is CVE-2026-46539?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Nimiq Core-rs-albatross

CVE-2026-46539

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, a logic flaw in BlockInclusionProof::is_block_proven causes the function to return true without perform…

EPSS: 0.002 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Nimiq Core-rs-albatross — versions < 1.4.0

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

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-2026-46539?: CVE-2026-46539 is a medium-severity vulnerability in Nimiq Core-rs-albatross, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.9/10. Published 2026-06-10.
How severe is CVE-2026-46539?: Medium severity. CVSS v3 base score is 5.9 out of 10.