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CVE-2026-32605— Nimiq: Remote crash via off-by-one signer bounds check in proposal buffer

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.

core-rs-albatross是Nimiq开源的一个Albatross协议的Rust实现。 core-rs-albatross 1.3.0之前版本存在安全漏洞，该漏洞源于ProposalSender::send函数使用大于号而非大于等于号进行签名者边界检查，可能导致内核崩溃。

CVSS 7.5 · High EPSS 0.46% · P39

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-32605

Vulnerability Information
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Vulnerability Title
Nimiq: Remote crash via off-by-one signer bounds check in proposal buffer
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, an untrusted peer could crash a validator by publishing a signed tendermint proposal message where signer == validators.num_validators(). ProposalSender::send uses > instead of >= for the signer bounds check, so the equality case passes and reaches validators.get_validator_by_slot_band(signer), which panics with an out-of-bounds index before any signature verification runs. This issue has been fixed 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
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
core-rs-albatross 安全漏洞
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之前版本存在安全漏洞，该漏洞源于ProposalSender::send函数使用大于号而非大于等于号进行签名者边界检查，可能导致内核崩溃。
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-2026-32605

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III. Intelligence Information for CVE-2026-32605

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Patches & Fixes for CVE-2026-32605 (1)

IV. Related Vulnerabilities

Same product: core-rs-albatross
Same vendor: nimiq
Same weakness: CWE-125

V. Comments for CVE-2026-32605

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