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Advisories

Bitwarden Server < 2026.4.1 Missing Authorization via Organization Cipher Import

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severity
medium
date
Affecting

  • Bitwarden Server < 2026.4.1

CWE
  • CWE-862 Missing Authorization
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Sanjok Karki
Description
Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organization via `POST /ciphers/import-organization` by submitting an empty `collections` array, which causes the server-side permission check to be skipped.

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