CVE-2026-33184

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nimiq/core-rs-albatross/commit/8f60a2d75b74b55764ecf34bd4435f4961630595	Patch
https://github.com/nimiq/core-rs-albatross/pull/3664	Patch
https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0	Release Notes
https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-5rm9-893q-vmhm	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nimiq:nimiq_proof-of-stake:*:*:*:*:*:rust:*:*

History

No history.

Information

Published : 2026-04-03 23:17

Updated : 2026-07-24 22:10

NVD link : CVE-2026-33184

Mitre link : CVE-2026-33184

CVE.ORG link : CVE-2026-33184

JSON object : View

Products Affected

nimiq

nimiq_proof-of-stake

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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