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CVE-2026-43911— Vaultwarden: Refresh tokens not invalidated on security stamp rotation

Quick assessment

Affected
dani-garcia vaultwarden
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 1.35.5之前版本存在代码问题漏洞，该漏洞源于当用户的安全戳通过某些安全敏感操作旋转时刷新令牌未被失效，允许持有先前获取的刷新令牌的攻击者在用户采取措施保护其账户后仍保持会话访问。

CVSS 6.8 · Medium EPSS 0.31% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
dani-garcia vaultwarden < 1.35.5 affected
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I. Basic Information for CVE-2026-43911

Vulnerability Information
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Vulnerability Title
Vaultwarden: Refresh tokens not invalidated on security stamp rotation
Source: CVE Program / CVE List V5
Vulnerability Description
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, refresh tokens are not invalidated when the user's security_stamp is rotated by some security-sensitive operations (password change, KDF change, key rotation, email change, org admin password reset, emergency access takeover). This allows an attacker holding a previously obtained refresh token to maintain session access even after the user has taken action to secure their account. This vulnerability is fixed in 1.35.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Vaultwarden 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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 1.35.5之前版本存在代码问题漏洞，该漏洞源于当用户的安全戳通过某些安全敏感操作旋转时刷新令牌未被失效，允许持有先前获取的刷新令牌的攻击者在用户采取措施保护其账户后仍保持会话访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
dani-garcia vaultwarden < 1.35.5 -

II. Public POCs for CVE-2026-43911

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III. Intelligence Information for CVE-2026-43911

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Vendor Advisories for CVE-2026-43911 (1)

Same Patch Batch · dani-garcia · 2026-05-11 · 4 CVEs total

CVE-2026-43912 8.7 HIGH Vaultwarden: Cross-Org Group Binding Enables Unauthorized Read And Write Access Into Anoth
CVE-2026-43913 8.1 HIGH Vaultwarden: Unconfirmed Owner Can Purge Entire Organization Vault
CVE-2026-43914 7.3 HIGH Vaultwarden: Brute-force protection bypass vulnerability

IV. Related Vulnerabilities

Same product: vaultwarden
Same vendor: dani-garcia
Same weakness: CWE-613

V. Comments for CVE-2026-43911

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