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Medium, CVSS 5.7amended

Validation Bypass in slp-validate

CVE-2019-16761GHSA-wmx6-vxcf-c3gr

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (slp-validate 1.0.1), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
5.7 · CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H
EPSS
  • CVE-2019-16761: 0.99% estimated exploitation activity in the next 30 days; percentile 62.64 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Versions of slp-validate prior to 1.0.1 are vulnerable to a validation bypass. Bitcoin scripts may cause the validation result from slp-validate to differ from the specified SLP consensus. This allows an attacker to create a Bitcoin script that causes a hard-fork from the SLP consensus. Recommendation Upgrade to version 1.0.1 or later.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-wmx6-vxcf-c3gr

  2. Revision 1 · created ·

    Published from osv record GHSA-wmx6-vxcf-c3gr

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2019-16761

Advisory: Validation Bypass in slp-validate
IDs: CVE-2019-16761, GHSA-wmx6-vxcf-c3gr
Record: https://patchnext.com/advisories/cve-2019-16761 (revision 2, source checked 26 Oct 2026, 12:07 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: slp-validate 1.0.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm slp-validate: affected >= 1.0.0, <= 1.0.0; fixed in 1.0.1

## Suggested inspection (read-only)
- `npm ls slp-validate --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on slp-validate.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-wmx6-vxcf-c3gr (OSV record GHSA-wmx6-vxcf-c3gr lists affected ranges: npm slp-validate >=1.0.0 <1.0.1 (fixed))
- Verified: https://github.com/advisories/GHSA-wmx6-vxcf-c3gr (GitHub-reviewed advisory GHSA-wmx6-vxcf-c3gr lists affected ranges: npm slp-validate >=1.0.0 <=1.0.0)

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