Vulnerability in Nimiq Nimiq_proof-of-stake
CVE-2026-34068
nimiq-transaction provides the transaction primitive to be used in Nimiq's Rust implementation. Prior to version 1.3.0, the staking contract accepts `UpdateValidator` transactions that set `new_voting_key=Some(...)` while omitting `new_pro…
EPSS: 0.002 (10.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N.
Affected products
- Nimiq Nimiq_proof-of-stake
- Nimiq Nimiq-transaction — versions < 1.3.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-34068?
- CVE-2026-34068 is a medium-severity vulnerability in Nimiq Nimiq_proof-of-stake, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.8/10. Published 2026-04-22.
- How severe is CVE-2026-34068?
- Medium severity. CVSS v3 base score is 6.8 out of 10.