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CVE-2026-33184— nimiq/core-rs-albatross: Discovery handshake limit could underflow and later provoke a deterministic overflow panic

Quick assessment

Affected
nimiq core-rs-albatross
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

core-rs-albatross是Nimiq开源的一个Albatross协议的Rust实现。 core-rs-albatross 1.3.0之前版本存在数字错误漏洞，该漏洞源于发现处理程序接受对等控制限制且未更改存储，可能导致容量溢出和内核崩溃。

CVSS 7.5 · High EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1498.002 · Reflection Amplification
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I. Basic Information for CVE-2026-33184

Vulnerability Information
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Vulnerability Title
nimiq/core-rs-albatross: Discovery handshake limit could underflow and later provoke a deterministic overflow panic
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
core-rs-albatross 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
core-rs-albatross是Nimiq开源的一个Albatross协议的Rust实现。 core-rs-albatross 1.3.0之前版本存在数字错误漏洞，该漏洞源于发现处理程序接受对等控制限制且未更改存储，可能导致容量溢出和内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nimiq core-rs-albatross < 1.3.0 -

II. Public POCs for CVE-2026-33184

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7120 chars
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III. Intelligence Information for CVE-2026-33184

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Patches & Fixes for CVE-2026-33184 (2)

Vendor Advisories for CVE-2026-33184 (1)

Same Patch Batch · nimiq · 2026-04-03 · 3 CVEs total

CVE-2026-35468 5.3 MEDIUM nimiq/core-rs-albatross: Panic in history index request handlers when a full node runs wit
CVE-2026-34061 4.9 MEDIUM nimiq/core-rs-albatross: Macro block proposal interlink bug

IV. Related Vulnerabilities

Same product: core-rs-albatross
Same vendor: nimiq
Same weakness: CWE-191

V. Comments for CVE-2026-33184

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