CVE-2026-33184
HIGH EPSS 36.6%
Published Apr 3, 20262mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
Published Apr 3, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
36.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-191
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| nimiq | nimiq_proof-of-stake | * | ≤1.2.2 |
References 4
- github.com https://github.com/nimiq/core-rs-albatross/commit/8f60a2d75b74b55764ecf34bd4435f4961630595
- github.com https://github.com/nimiq/core-rs-albatross/pull/3664
- github.com https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0
- github.com https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-5rm9-893q-vmhm
Remediation
- github.com https://github.com/nimiq/core-rs-albatross/commit/8f60a2d75b74b55764ecf34bd4435f4961630595
- github.com https://github.com/nimiq/core-rs-albatross/pull/3664