CVE-2026-32605

Summary

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.

Affected Software

Weaknesses

• CWE-125: CWE-125: Out-of-bounds Read
• CWE-193: CWE-193: Off-by-one Error

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-g99c-h7j7-rfhv
• https://github.com/nimiq/core-rs-albatross/pull/3661
• https://github.com/nimiq/core-rs-albatross/commit/9199364b60c7acae4219800d194bbe07d2997b8c
• https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0

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