Vaultwarden
CVE-2026-26012
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to 1.35.3, a regular organization member can retrieve all ciphers within an organization, regardless of collection permissions. The endpoint /ciphers/organization-details is accessible to any organization member and internally uses Cipher::find_by_org to retrieve all ciphers. These ciphers are returned with CipherSyncType::Organization without enforcing collection-level access control. This vulnerability is fixed in 1.35.3.
AnalysisAI
Vaultwarden versions prior to 1.35.3 allow authenticated organization members to bypass collection-level access controls and retrieve all ciphers within their organization through the /ciphers/organization-details endpoint. An attacker with regular member privileges can access sensitive credentials and encrypted data they should not have permission to view. No patch is currently available for affected deployments.
Technical ContextAI
Classified as CWE-863 (Incorrect Authorization). Affects Vaultwarden. vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to 1.35.3, a regular organization member can retrieve all ciphers within an organization, regardless of collection permissions. The endpoint /ciphers/organization-details is accessible to any organization member and internally uses Cipher::find_by_org to retrieve all ciphers. These ciphers are returned with CipherSyncType::Organization without enforcing collection-level access control.
RemediationAI
Fixed in version 1.35.3.. Restrict network access to the affected service where possible.
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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