What is CVE-2026-42994?

CVE-2026-42994 is a critical-severity vulnerability in Bitwarden Cli, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-05-01.

How severe is CVE-2026-42994?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Bitwarden Cli

CVE-2026-42994

Bitwarden CLI 2026.4.0 from 2026-04-22T21:57Z to 2026-04-22T23:30Z, when obtained from npm, had embedded malicious code. This is related to a Checkmarx supply chain incident.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (20.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Bitwarden Cli — versions 2026.4.0
Bitwarden Cli — versions 2026.4.0

Weakness classification (CWE)

CWE-78 — OS Command Injection
CWE-94 — Code Injection

References

cve@mitre.org (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42994?: CVE-2026-42994 is a critical-severity vulnerability in Bitwarden Cli, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-05-01.
How severe is CVE-2026-42994?: Critical severity. CVSS v3 base score is 9.8 out of 10.