PatchTheCVECVE-2026-34068: nimiq-transaction provides the transaction primitive to be used in Nimiq's Rust implementation
CVE-2026-34068 is a medium-severity flaw (CVSS 6.8) affecting nimiq proof-of-stake. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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_proof_of_knowledge`. this skips the proof-of-knowledge requirement that is needed to prevent BLS rogue-key attacks when public keys are aggregated. Because tendermint macro block justification verification aggregat
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.8 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 90%) |
| CISA exploited list | No |
| Weakness | CWE-347 |
| Published | 2026-04-22 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-34068?
nimiq proof-of-stake: upgrade to 1.3.0. Exact commands for each OS are on this page.
Is CVE-2026-34068 being exploited?
CVE-2026-34068 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-34068 affect?
CVE-2026-34068 affects nimiq proof-of-stake. Severity is medium (CVSS 6.8). 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_proo
How urgent is CVE-2026-34068?
Priority 31/100. Remotely exploitable, no login, no user action
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