CVE-2026-34069Network attack vector

Handler-task panic via micro-block locator

Published Apr 13, 2026 · Updated Apr 14, 2026

Reachable assertion in Nimiq core-rs-albatross before 1.3.0 allows remote attackers to panic a P2P handler task. The RequestMacroChain::handle method accepts a main-chain micro-block locator, passes it to get_macro_blocks(), and unwraps the resulting BlockIsNotMacro error. An unauthenticated P2P connection is sufficient; the documented consequence is interruption of that message-handler task, not a confirmed process crash.

CVSS severity5.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Nimiq core-rs-albatross before 1.3.0 allows remote attackers to panic a P2P handler task. The RequestMacroChain::handle method accepts a main-chain micro-block locator, passes it to get_macro_blocks(), and unwraps the resulting BlockIsNotMacro error. An unauthenticated P2P connection is sufficient; the documented consequence is interruption of that message-handler task, not a confirmed process crash.

The record

CVE
CVE-2026-34069
Published
Apr 13, 2026
Updated
Apr 14, 2026
Vendor
Nimiq
Product
core-rs-albatross
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nimiq · core-rs-albatrossversion=< 1.3.0

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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