CVE-2026-28402

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 89% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.2.2, a malicious or compromised validator that is elected as proposer can publish a macro block proposal where header.body_root does not match the actual macro body hash. The proposal can pass proposal verification because the macro proposal verification path validates the header but does not validate the binding body_root == hash(body); later code expects this binding and may panic on mismatch, crashing validators. Note that the impact is only for validator nodes. The patch for this vulnerability is formally released as part of v1.2.2. The patch adds the corresponding body root verification in the proposal checks. No known workarounds are available.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

February 27, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated May 4, 2026
Patch available. Sources: github.
github Patch Available

Missing proposal body root verification · Advisory · nimiq/core-rs-albatross · GitHub

https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-7wh6-rmxx-ww47
generic

Release Mainnet 1.2.2 · nimiq/core-rs-albatross · GitHub

https://github.com/nimiq/core-rs-albatross/releases/tag/v1.2.2
generic

blockchain: Add proposal body root verification by jsdanielh · Pull Request #3623 · nimiq/core-rs-albatross · GitHub

https://github.com/nimiq/core-rs-albatross/pull/3623
generic

blockchain: Add proposal body root verification · nimiq/core-rs-albatross@6454c26 · GitHub

https://github.com/nimiq/core-rs-albatross/commit/6454c26d966858c5520f55739a30b94c17656c85

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-07-26 14:54 UTCEPSS rescore
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  3. 2026-07-25 14:18 UTCEPSS rescore
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  8. 2026-07-23 03:08 UTCEG score recompute
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  1. 2026-07-13 06:13 UTCEPSS rescore
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  17. 2026-06-29 09:32 UTCOSV refresh
  18. 2026-06-28 14:07 UTCEPSS rescore
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  27. 2026-06-23 21:33 UTCEPSS rescore
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  59. 2026-06-01 11:43 UTCOSV refresh
  60. 2026-05-31 22:30 UTCEPSS rescore
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  74. 2026-05-26 07:18 UTCEPSS rescore
  75. 2026-05-23 15:21 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-28402?
CVE-2026-28402 is a high vulnerability published on February 27, 2026. nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.2.2, a malicious or compromised validator that is elected as proposer can publish a macro block proposal where header.bodyroot does not match the…
When was CVE-2026-28402 disclosed?
CVE-2026-28402 was first published in the National Vulnerability Database on February 27, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28402 actively exploited?
CVE-2026-28402 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.4% of all scored CVEs.
What is the CVSS score of CVE-2026-28402?
CVE-2026-28402 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-28402?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28402, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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