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TI-2026-25612 Aliases CVE-2026-33184

nimiq/core-rs-albatross: Discovery handshake limit could underflow and later provoke a deterministic overflow panic

Priority LOW 39CWE-191Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.

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, the discovery handler accepts a peer-controlled limit during handshake and stores it unchanged. The immediate HandshakeAck path then honors limit = 0 and returns zero contacts, which makes the session look benign. Later, after the same session reaches Established, the periodic update path computes self.peer_list_limit.unwrap() as usize - 1. With limit = 0, that wraps to usize::MAX and then in rand 0.9.2, choose_multiple() immediately attempts Vec::with_capacity(amount), which deterministically panics with capacity overflow. This issue has been patched in version 1.3.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00479 41st percentileScored 2026-11-07
Fix Fixed core-rs-albatross (nimiq): 1.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nimiqcore-rs-albatrossbefore 1.3.01.3.0Patch availableCNA
  • core-rs-albatross Vendornimiq Affected before 1.3.0 Fixed in 1.3.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nimiq:nimiq_proof-of-stake:*:*:*:*:*:rust:*:*up to 1.2.2Vulnerablenimiq
  • cpe:2.3:a:nimiq:nimiq_proof-of-stake:*:*:*:*:*:rust:*:* Versions up to 1.2.2 Vulnerable ·nimiq

Remediation

  • Fix · CNA core-rs-albatross (nimiq) Fixed in 1.3.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33184
  2. 2026-10-25 Priority changed: MEDIUM → LOW

References

Patch 2

Advisory 1

Other 1

  • TI-2026-26389 nimiq-account: Vesting insufficient funds error can panic CVSS 3.1HIGH 8.2
  • TI-2026-25867 nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation CVSS 3.1CRITICAL 9.6
  • TI-2026-27598 nimiq/core-rs-albatross: Panic in history index request handlers when a full node runs without the history index CVSS 3.1HIGH 7.5
  • TI-2026-26390 nimiq-primitives: Node crash due to missing interlink validation in election macro block proposals CVSS 3.1HIGH 7.5
  • TI-2026-26388 network-libp2p: Peer can crash the node by opening discovery protocol substream twice CVSS 3.1HIGH 7.5
  • TI-2026-25114 Nimiq: Remote crash via off-by-one signer bounds check in proposal buffer CVSS 3.1HIGH 7.5
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences