CVE-2026-34062— Nimiq has Allocation of Resources Without Limits or Throttling in its libp2p request/response
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I. Basic Information for CVE-2026-34062
Vulnerability Information
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Vulnerability Title
Nimiq has Allocation of Resources Without Limits or Throttling in its libp2p request/response
Source: NVD (National Vulnerability Database)
Vulnerability Description
nimiq-libp2p is a Nimiq network implementation based on libp2p. Prior to version 1.3.0, `MessageCodec::read_request` and `read_response` call `read_to_end()` on inbound substreams, so a remote peer can send only a partial frame and keep the substream open. because `Behaviour::new` also sets `with_max_concurrent_streams(1000)`, the node exposes a much larger stalled-slot budget than the library default. The patch for this vulnerability is formally released as part of v1.3.0. No known workarounds are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nimiq 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nimiq是Nimiq开源的一个Albatross协议的Rust实现。 Nimiq 1.3.0之前版本存在安全漏洞，该漏洞源于nimiq-libp2p中MessageCodec::read_request和read_response在入站子流上调用read_to_end，因此远程对等方可以仅发送部分帧并保持子流打开。由于Behaviour::new还设置了with_max_concurrent_streams(1000)，节点暴露的停滞槽预算远大于库默认值。
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 | network-libp2p | < 1.3.0 | - |
II. Public POCs for CVE-2026-34062
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · nimiq · 2026-04-22 · 8 CVEs total
| CVE-2026-33471 | 9.6 CRITICAL | nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation |
| CVE-2026-34063 | 7.5 HIGH | network-libp2p: Peer can crash the node by opening discovery protocol substream twice |
| CVE-2026-34065 | 7.5 HIGH | nimiq-primitives: Node crash due to missing interlink validation in election macro block p |
| CVE-2026-34068 | 6.8 MEDIUM | nimiq-transaction: UpdateValidator transactions allows voting key change without proof-of- |
| CVE-2026-34064 | 5.3 MEDIUM | nimiq-account: Vesting insufficient funds error can panic |
| CVE-2026-34066 | 5.3 MEDIUM | nimiq-blockchain: Peer-triggerable panic during history sync |
| CVE-2026-34067 | 3.1 LOW | nimiq-transaction vulnerable to panic via `HistoryTreeProof` length mismatch |
IV. Related Vulnerabilities
Same vendor: nimiq
- CVE-2026-34068
nimiq-transaction: UpdateValidator transactions allows votin - CVE-2026-34067
nimiq-transaction vulnerable to panic via `HistoryTreeProof` - CVE-2026-34066
nimiq-blockchain: Peer-triggerable panic during history sync - CVE-2026-34065
nimiq-primitives: Node crash due to missing interlink valida - CVE-2026-34064
nimiq-account: Vesting insufficient funds error can panic
Same weakness: CWE-770
- CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42189
Russh: Pre-auth DoS via unbounded allocation in keyboard-int - CVE-2026-42793
Atom table exhaustion via attacker-controlled GraphQL SDL na - CVE-2026-44499
ZEBRA: Permanent Block Discovery Halt via Gossip Queue Satur - CVE-2026-44500
ZEBRA: Allocation Amplification in Inbound Network Deseriali
V. Comments for CVE-2026-34062
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