CVE-2020-15131: In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive va

Q: How do I fix CVE-2020-15131?

slp-validate: upgrade to 1.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2020-15131 being exploited?

CVE-2020-15131 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-15131 affect?

CVE-2020-15131 affects slp-validate. Severity is high (CVSS 7.5). In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could cre

Q: How urgent is CVE-2020-15131?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2020-15131 is a high-severity flaw (CVSS 7.5) affecting slp-validate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification. This is fixed in version 1.2.2.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-697
Published	2020-07-30
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: simpleledger

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-07-30 15:15 UTCPublished CVE record published
2026-06-17 02:56 UTCUpdated Record last modified

simpleledger slp-validate UPGRADE

Affected: < 1.2.2

Fixed in: 1.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy slp-validate || rpm -q slp-validate || slp-validate --version

2. UPGRADE to 1.2.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade slp-validate

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade slp-validate

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-15131?

slp-validate: upgrade to 1.2.2. Exact commands for each OS are on this page.

Is CVE-2020-15131 being exploited?

CVE-2020-15131 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-15131 affect?

CVE-2020-15131 affects slp-validate. Severity is high (CVSS 7.5). In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could cre

How urgent is CVE-2020-15131?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Software pages

npm packages vulnerabilities

Related CVEs

CVE-2020-11072 HIGH 8.6 UPGRADE In SLP Validate (npm package slp-validate) before version 1.2.1, users could experience false-negative validat

References

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