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Insufficient Entropy in cryptiles

Critical severity GitHub Reviewed Published Sep 11, 2018 to the GitHub Advisory Database • Updated Jun 8, 2026

Package

npm cryptiles (npm)

Affected versions

>= 4.0.0, < 4.1.2
>= 3.1.0, < 3.1.3

Patched versions

4.1.2
3.1.3

Description

Versions of cryptiles prior to 4.1.2 are vulnerable to Insufficient Entropy. The randomDigits() method does not provide sufficient entropy and its generates digits that are not evenly distributed.

Recommendation

Upgrade to version 4.1.2. The package is deprecated and has been moved to @hapi/cryptiles and it is strongly recommended to use the maintained package.

References

Published by the National Vulnerability Database Jul 9, 2018
Published to the GitHub Advisory Database Sep 11, 2018
Reviewed Jun 16, 2020
Last updated Jun 8, 2026

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(75th percentile)

Weaknesses

Insufficient Entropy

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others. Learn more on MITRE.

CVE ID

CVE-2018-1000620

GHSA ID

GHSA-rq8g-5pc5-wrhr

Source code

Credits

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