CVE-2026-26012
Unauthorized Access in Vaultwarden Allows Organization-Wide Cipher Disclosure
Publication date: 2026-02-11
Last updated on: 2026-02-13
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| dani-garcia | vaultwarden | to 1.35.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in vaultwarden, an unofficial Bitwarden compatible server. Prior to version 1.35.3, any regular organization member could retrieve all stored ciphers within the organization, regardless of the permissions set on individual collections. This happens because the endpoint /ciphers/organization-details is accessible to all organization members and internally retrieves all ciphers without enforcing collection-level access control. As a result, sensitive data meant to be restricted to certain collections could be accessed by unauthorized members.
How can this vulnerability impact me? :
The vulnerability allows unauthorized organization members to access all stored ciphers, potentially exposing sensitive credentials or secrets that should be restricted. This can lead to confidentiality breaches, as attackers or unauthorized users within the organization can view sensitive information without proper permissions.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, upgrade vaultwarden to version 1.35.3 or later, where the issue has been fixed.