CVE-2020-15130: False-positive validity for NFT1 genesis transactions in slpjs
Summary
CVE-2020-15130: False-positive validity for NFT1 genesis transactions in SLPJS. Affects slpjs versions < 0.27.4. Fixed in 0.27.4. How to fix ↓
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Background
slpjs is an npm package that provides functionality for working with Simple Ledger Protocol (SLP) tokens on the Bitcoin Cash (BCH) blockchain. It allows users to create, manage, and validate SLP tokens. The package is widely used by developers and applications in the BCH ecosystem.
Vulnerability Detail
The vulnerability identified as CVE-2020-15130 affects versions of slpjs prior to 0.27.4. It relates to the false-positive validation outcomes for the NFT1 Child Genesis transaction type. Due to a flaw in the implementation, a poorly implemented SLP wallet or an opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type, which is required by the NFT1 specification. This vulnerability could lead to the creation of invalid NFT1 child tokens that do not adhere to the protocol requirements.
How To Fix
Latest published version: 0.27.11 as of 23 Oct 2026
npm install slpjs@0.27.11Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
0.27.4
This is the first release that contains the fix.
npm install slpjs@0.27.4Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended solution is to upgrade to the patched version of slpjs (0.27.4 or later).
Conclusion
slpjs versions prior to 0.27.4 are vulnerable to false-positive validation outcomes for NFT1 Child Genesis transactions. It is recommended to upgrade to version 0.27.4 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for slpjs →
FAQ
slpjs is an npm package used for working with SLP tokens on the BCH blockchain. It provides functionality for creating, managing, and validating SLP tokens.
The vulnerability allows for the creation of seemingly valid NFT1 child tokens without burning the required NFT1 Group token type. This can lead to the existence of invalid NFT1 child tokens that do not adhere to the protocol requirements.
To fix this vulnerability, upgrade to slpjs version 0.27.4 or later.
There are no specific workarounds mentioned for this vulnerability. Upgrading to the patched version of slpjs is the recommended solution.
More information about slpjs can be found on the npm package page: https://www.npmjs.com/package/slpjs. The NFT1 specification can be accessed at: https://slp.dev/specs/slp-nft-1/#nft1-protocol-requirements.
References
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