CVE-2024-41945Public exploitNetwork attack vector

Pending transaction replacement via reused UTXOs

Published Jul 30, 2024 · Updated Aug 2, 2024

Improper input validation in Fuel Labs Fuel TypeScript SDK before 0.93.0 allows remote authenticated users to replace pending transactions. The Account.fund function calls getResourcesToSpend statelessly and fails to exclude UTXOs already assigned to other transactions in the same block. Funding multiple transactions before block production can reuse a randomly selected UTXO, causing a new submission to fail or evict the earlier transaction from the transaction pool.

CVSS severity3.1
Low
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Fuel Labs Fuel TypeScript SDK before 0.93.0 allows remote authenticated users to replace pending transactions. The Account.fund function calls getResourcesToSpend statelessly and fails to exclude UTXOs already assigned to other transactions in the same block. Funding multiple transactions before block production can reuse a randomly selected UTXO, causing a new submission to fail or evict the earlier transaction from the transaction pool.

The record

CVE
CVE-2024-41945
Published
Jul 30, 2024
Updated
Aug 2, 2024
Vendor
Fuel Labs
Product
Fuel TypeScript SDK
Classifications
CWE-20
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=0 <0.93.0
  2. Affected versionversion=< 0.93.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fuel Labs · Fuel TypeScript SDKversion=0 <0.93.0; version=< 0.93.0

Published CVSS scores

3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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