Access Control Flaw in Vaultwarden Affects Organization Members
CVE-2026-26012

6.5MEDIUM

Key Information:

Vendor

Dani-garcia

Status
Vaultwarden
Vendor
CVE Published:
11 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-26012?

Vaultwarden, an unofficial server compatible with Bitwarden, has a critical access control flaw that allows standard organization members to retrieve all ciphers from an organization, regardless of their collection permissions. Prior to version 1.35.3, the /ciphers/organization-details endpoint was accessible to any member of the organization, enabling them to access sensitive information without the necessary collection-level access control. This vulnerability poses a significant risk to data integrity and confidentiality within organizations using Vaultwarden.

Affected Version(s)

vaultwarden < 1.35.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-26012
Created by diegobaelen

References

https://github.com/dani-garcia/vaultwarden/security/advis...
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https://github.com/dani-garcia/vaultwarden/releases/tag/1...
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CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.