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VulnerabilityPublished

CVE-2026-46540: nimiq core-rs-albatross · Improper Enforcement of Behavioral Workflow

Affects nimiq core-rs-albatrossSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium : upgrade to 1.4.0 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.4.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade core-rs-albatross and github/nimiq/core-rs-albatross to 1.4.0.

Affected software

ProductAffectedFixed in
nimiqcore-rs-albatrossAffected
  • <1.4.0
Fixed in
  • 1.4.0
crates.iogithub/nimiq/core-rs-albatrosspkg:cargo/github/nimiq/core-rs-albatrossOther threatsAffected
  • <1.4.0
Fixed in
  • 1.4.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to Nimiq core-rs-albatross version 1.4.0 or later, where this issue has been patched. No other mitigations are indicated.

Description

Nimiq core-rs-albatross versions prior to 1.4.0 contain a vulnerability where the LightBlockchain::rebranch() function improperly updates blockchain state when adopting a fork chain ending in a macro block. This leads to stale macro block and validator state, causing verification failures and stalling the light client's chain progression. The issue is fixed in version 1.4.0.

References

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