CVE-2020-10256

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-27 · updated 2026-06-17

Description

An issue was discovered in beta versions of the 1Password command-line tool prior to 0.5.5 and in beta versions of the 1Password SCIM bridge prior to 0.7.3. An insecure random number generator was used to generate various keys. An attacker with access to the user's encrypted data may be able to perform brute-force calculations of encryption keys and thus succeed at decryption.

Affected products

1Password Command Line Interface: before 0.5.5 — fixed in 0.5.5
1Password Scim: before 0.7.3 — fixed in 0.7.3

How to fix

Upgrade to a fixed version: 1Password Command Line Interface 0.5.5; 1Password Scim 0.7.3. Check the vendor advisory for mitigations.

References

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