CVE-2026-27898— Vaultwarden 安全漏洞

Vaultwarden: Unauthorized Access via Partial Update API on Another User’s Cipher

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, an authenticated regular user can specify another user’s cipher_id and call "PUT /api/ciphers/{id}/partial" Even though the standard retrieval API correctly denies access to that cipher, the partial update endpoint returns 200 OK and exposes cipherDetails (including name, notes, data, secureNote, etc.). This issue has been patched in version 1.35.4.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

通过用户控制密钥绕过授权机制

Vaultwarden 安全漏洞

Vaultwarden是Daniel García个人开发者的一个用 Rust 编写的 Bitwarden 服务器 API 的替代实现。 Vaultwarden 1.35.4之前版本存在安全漏洞，该漏洞源于经过身份验证的普通用户可指定其他用户的cipher_id并调用部分更新端点，可能导致暴露密文详细信息。

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