Validator parsing discrepancy due to string encoding in NPM slp-validate 1.0.0

published 2019-11-15 6 y ago modified 2026-07-08 4 mo ago also GHSA-wmx6-vxcf-c3gr , EUVD-2019-0765

cvss: 5.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 2

npm slp-validate 1.0.1

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.7	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H
NVD	2.0	4.9	AV:N/AC:M/Au:S/C:N/I:P/A:P
GitHub	3.1	5.7	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	slp-validate	>=1.0.0, <1.0.1	1.0.1

Affected products

simpleledger slp-validate

Classification

Weakness

CWE-20 Improper Input Validation

References

github.com /simpleledger/slp-validate/commit/50ad96c2798dad6b9f9a13333dd05232defe5730#diff-fe58606994c412ba56a65141a7aa4a
web, patch, third-party-advisory
github.com /simpleledger/slp-validate/security/advisories/GHSA-wmx6-vxcf-c3gr
web, patch, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-16761
advisory
github.com /advisories/GHSA-wmx6-vxcf-c3gr
advisory
npmjs.com /advisories/1422
web

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