CVE-2024-41945: The fuels-ts typescript SDK has no awareness of to-be-spent transactions

Severity: low (CVSS 3.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-30 · updated 2026-06-17
Weakness: CWE-20

Description

fuels-ts is a library for interacting with Fuel v2. The typescript SDK has no awareness of to-be-spent transactions causing some transactions to fail or silently get pruned as they are funded with already used UTXOs. The problem occurs, because the `fund` function in `fuels-ts/packages/account/src/account.ts` gets the needed ressources statelessly with the function `getResourcesToSpend` without taking into consideration already used UTXOs. This issue will lead to unexpected SDK behaviour, such as a transaction not getting included in the `txpool` / in a block or a previous transaction silently getting removed from the `txpool` and replaced with a new one.

Affected products

FuelLabs fuels-ts: before 0.93.0 — fixed in 0.93.0

How to fix

Upgrade to a fixed version: FuelLabs fuels-ts 0.93.0. Check the vendor advisory for mitigations.

References

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