CVE-2026-34064

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-04-22. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

nimiq-account contains account primitives to be used in Nimiq's Rust implementation. Prior to version 1.3.0, VestingContract::can_change_balance returns AccountError::InsufficientFunds when new_balance < min_cap, but it constructs the error using balance: self.balance - min_cap. Coin::sub panics on underflow, so if an attacker can reach a state where min_cap > balance, the node crashes while trying to return an error. The min_cap > balance precondition is attacker-reachable because the vesting contract creation data (32-byte format) allows encoding total_amount without validating total_amount <= transaction.value (the real contract balance). After creating such a vesting contract, the attacker can broadcast an outgoing transaction to trigger the panic during mempool admission and block processing. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

Published

April 22, 2026

Last Modified

April 24, 2026

Advisory Details (4)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
githubMentions a patch (unverified)

Vesting insufficient funds error can panic · Advisory · nimiq/core-rs-albatross · GitHub

https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3
github_release Patch Available

Mainnet 1.3.0

Patch available: nimiq/core-rs-albatross v1.3.0

https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0
github_pr

Fix underflow panic in vesting and HTLC insufficient funds error path

Upstream fix in progress (PR #3658 · nimiq/core-rs-albatross, state=closed)

https://github.com/nimiq/core-rs-albatross/pull/3658
github_commit Patch Available

commit 4d01946f0b3d (nimiq/core-rs-albatross)

Patch available: nimiq/core-rs-albatross v1.3.0 (contains commit 4d01946f0b3d)

https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
rustnimiq-account—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
crates.io(1)
PackageVulnerable rangeFix by version rangeDependents
nimiq-account—
  • every version through 0.2.0: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 27× 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 205 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-10 17:33 UTCOSV refresh
  3. 2026-10-09 20:07 UTCEPSS rescore
  4. 2026-10-08 17:12 UTCEPSS rescore
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  16. 2026-09-21 04:49 UTCOSV refresh
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  1. 2026-09-11 14:53 UTCEPSS rescore
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  6. 2026-09-06 13:47 UTCEPSS rescore
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  8. 2026-09-02 14:12 UTCEPSS rescore
  9. 2026-09-02 02:38 UTCOSV refresh
  10. 2026-09-01 13:53 UTCEPSS rescore
  11. 2026-09-01 04:39 UTCEPSS rescore
  12. 2026-08-30 19:17 UTCEPSS rescore
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  26. 2026-08-16 14:56 UTCEPSS rescore
  27. 2026-08-16 05:56 UTCEG score recompute
  28. 2026-08-16 05:56 UTCGHSA enrichment
  29. 2026-08-16 02:14 UTCEPSS rescore
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  31. 2026-08-14 04:16 UTCEG score recompute
  32. 2026-08-14 04:16 UTCGHSA enrichment
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  35. 2026-08-12 18:28 UTCGHSA enrichment
  36. 2026-08-12 13:50 UTCEPSS rescore
  37. 2026-08-11 04:53 UTCEG score recompute
  38. 2026-08-11 04:53 UTCGHSA enrichment
  39. 2026-08-11 00:00 UTCEPSS rescore
  40. 2026-08-10 04:11 UTCEG score recompute
  41. 2026-08-10 04:11 UTCGHSA enrichment
  42. 2026-08-09 13:46 UTCEPSS rescore
  43. 2026-08-09 03:28 UTCEG score recompute
  44. 2026-08-09 03:28 UTCGHSA enrichment
  45. 2026-08-08 16:37 UTCEPSS rescore
  46. 2026-08-07 12:45 UTCEG score recompute
  47. 2026-08-07 12:44 UTCGHSA enrichment
  48. 2026-08-06 13:46 UTCEPSS rescore
  49. 2026-08-05 23:02 UTCEG score recompute
  50. 2026-08-05 23:02 UTCGHSA enrichment
  51. 2026-08-05 19:17 UTCEPSS rescore
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  54. 2026-08-03 21:12 UTCEG score recompute
  55. 2026-08-03 21:12 UTCGHSA enrichment
  56. 2026-08-03 10:36 UTCEPSS rescore
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  58. 2026-08-02 12:00 UTCGHSA enrichment
  59. 2026-08-02 02:27 UTCEPSS rescore
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  72. 2026-07-23 03:09 UTCEG score recompute
  73. 2026-07-22 14:08 UTCEPSS rescore
  74. 2026-07-21 15:24 UTCEPSS rescore
  75. 2026-07-20 17:08 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-34064?
CVE-2026-34064 is a medium vulnerability published on April 22, 2026. nimiq-account contains account primitives to be used in Nimiq's Rust implementation. Prior to version 1.3.0, VestingContract::canchangebalance returns AccountError::InsufficientFunds when newbalance < mincap, but it constructs the error using balance: self.balance - mincap. Coin::sub panics on…
When was CVE-2026-34064 disclosed?
CVE-2026-34064 was first published on April 22, 2026, with the most recent update on April 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34064 actively exploited?
CVE-2026-34064 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34064?
CVE-2026-34064 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-34064?
A fix for CVE-2026-34064 is available: update to the fixed version the vendor names in its advisory.

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