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CVE-2026-54541— Nimiq: Panic in TrieProof::verify via child_index unwrap on equal-length keys

Quick assessment

Affected
nimiq core-rs-albatross
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nimiq core-rs-albatross是Nimiq组织开源的一款基于Rust实现区块链共识与网络节点服务的系统软件。 Nimiq core-rs-albatross 1.6.0之前版本存在异常处理不当漏洞，该漏洞源于在 primitives/src/trie/trie_proof_node.rs 中，TrieProof::verify 调用 child_index 时，is_prefix_of 接受相等密钥，KeyNibbles::get 在密钥长度处返回 None 并被无条件 unwrap，恶意

CVSS 3.7 · Low EPSS 0.44% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
nimiq core-rs-albatross < 1.6.0 affected
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I. Basic Information for CVE-2026-54541

Vulnerability Information
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Vulnerability Title
Nimiq: Panic in TrieProof::verify via child_index unwrap on equal-length keys
Source: CVE Program / CVE List V5
Vulnerability Description
Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to 1.6.0, a malicious state-sync peer can crash a syncing node by sending a crafted TrieChunk proof containing two TrieProofNode values with identical keys. TrieProof::verify calls TrieProofNode::child_index in primitives/src/trie/trie_proof_node.rs, where is_prefix_of accepts equal keys and KeyNibbles::get is called at the key length, returns None, and is unconditionally unwrapped. Untrusted ResponseChunk data reaches commit_chunks, put_chunk, and proof.verify before cryptographic proof validation, so the attacker does not need a valid proof. Exploitation requires the attacker to be selected as the victim's sync peer during state sync, and the resulting panic is transient because the node restarts and resynchronizes. This issue is fixed in version 1.6.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
Nimiq core-rs-albatross 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nimiq core-rs-albatross是Nimiq组织开源的一款基于Rust实现区块链共识与网络节点服务的系统软件。 Nimiq core-rs-albatross 1.6.0之前版本存在异常处理不当漏洞，该漏洞源于在 primitives/src/trie/trie_proof_node.rs 中，TrieProof::verify 调用 child_index 时，is_prefix_of 接受相等密钥，KeyNibbles::get 在密钥长度处返回 None 并被无条件 unwrap，恶意
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 < 1.6.0 -

II. Public POCs for CVE-2026-54541

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III. Intelligence Information for CVE-2026-54541

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Patches & Fixes for CVE-2026-54541 (2)

Vendor Advisories for CVE-2026-54541 (1)

Vendor Pages for CVE-2026-54541 (1)

IV. Related Vulnerabilities

Same product: core-rs-albatross
Same vendor: nimiq
Same weakness: CWE-248