Out-of-bounds Read in Nimiq Core-Rs-Albatross
CVE-2026-32605
nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, an untrusted peer could crash a validator by publishing a signed tendermint proposal message where signer == validators.num_validators(). ProposalSender::send uses > instead of >= for the signer bounds check, so the equality case passes and reaches validators.get_validator_by_slot_band(signer), which panics with an out-of-bounds index before any signature verification runs. This issue has been fixed in version 1.3.0.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.005 · change: -0.002
Affected products
- Nimiq Core-Rs-Albatross — versions < 1.3.0
- Nimiq Proof-Of-Stake
Weakness classification (CWE)
References
- github.com/nimiq/core-rs-albatross/security/advisories/GHSA-g99c-h7j7-rfhv (Patch, Vendor Advisory)
- github.com/nimiq/core-rs-albatross/pull/3661 (Patch, Issue Tracking)
- github.com/nimiq/core-rs-albatross/commit/9199364b60c7acae4219800d194bbe07d2997… (Patch)
- github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-32605?
- CVE-2026-32605 is a high-severity vulnerability in Nimiq Core-Rs-Albatross, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-13.
- How severe is CVE-2026-32605?
- High severity. CVSS v3 base score is 7.5 out of 10.