The fuels-ts typescript SDK has no awareness of to-be-spent transactions

published 2024-07-30 2 y ago modified 2026-06-17 4 mo ago also GHSA-3jcg-vx7f-j6qf , EUVD-2024-2237

cvss: 3.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 links 1

npm @fuel-ts/account 0.93.0
FuelLabs fuels-ts 0.93.0

github.com/FuelLabs/fuels-ts@16ee1bf commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-07-31)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
GitHub	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	@fuel-ts/account	<0.93.0	0.93.0

Affected products

FuelLabs fuels-ts

Classification

Weakness

CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary