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.
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Fri, 03 Apr 2026 22:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | nimiq/core-rs-albatross: Discovery handshake limit could underflow and later provoke a deterministic overflow panic | |
| Weaknesses | CWE-191 | |
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-03T22:09:01.430Z
Reserved: 2026-03-17T22:16:36.720Z
Link: CVE-2026-33184
Vulnrichment
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NVD
Status : Received
Published: 2026-04-03T23:17:03.600
Modified: 2026-04-03T23:17:03.600
Link: CVE-2026-33184
Redhat
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Weaknesses