CVE-2019-16761
Validator parsing discrepancy due to string encoding in NPM slp-validate 1.0.0
A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the [email protected] 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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Validator parsing discrepancy due to string encoding in NPM slp-validate 1.0.0
A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the [email protected] 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.
- Record
CVE-2019-16761- CVSS 3.1
- 5.7 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2019-0765
A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the [email protected] 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.
- Record
EUVD-2019-0765- CVSS 3.1
- 5.7 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wmx6-vxcf-c3gr
Validation Bypass in slp-validate
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.
- Record
GHSA-wmx6-vxcf-c3gr- CVSS 3.1
- 5.7 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the [email protected] 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.
- Record
CVE-2019-16761- CVSS 3.1
- 5.7 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H - CVSS 2.0
- 4.9 Medium
AV:N/AC:M/Au:S/C:N/I:P/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the [email protected] 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.
- Record
CVE-2019-16761- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-wmx6-vxcf-c3gr
Validation Bypass in slp-validate
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.
- Record
GHSA-wmx6-vxcf-c3gr- CVSS 3.1
- 5.7 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
slp-validatenpm |
1.0.0 to 1.0.0 | 1.0.1 |
slp-validatenpm |
1.0.0 up to 1.0.1 | 1.0.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-16761 is a medium vulnerability (CVSS 5.7) in Simpleledger Slp-validate, published November 15, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.99%, the 62nd percentile. Fixed in slp-validate 1.0.1.