CVE-2026-57521: Missing Authorization in bitwarden server
Bitwarden Server before 2026.5.0 contains a broken access control vulnerability that allows any authenticated user to access arbitrary organization billing data by supplying an arbitrary organizationId to the PreviewInvoiceController endpoints without membership or authorization checks. Attackers can exploit the missing ManageOrganizationBillingRequirement on the preview invoice endpoints to retrieve Stripe-computed tax totals, subscription status, and billing details derived from any target organization's real customer and subscription data.
AI Analysis
Technical Summary
CVE-2026-57521 is an access control vulnerability in Bitwarden Server before version 2026.5.0. The vulnerability arises from missing authorization checks on the PreviewInvoiceController endpoints, allowing authenticated users to supply arbitrary organization IDs and access billing information of organizations they do not belong to. The missing ManageOrganizationBillingRequirement on these endpoints permits unauthorized retrieval of Stripe billing data such as tax totals and subscription status. This vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity.
Potential Impact
An attacker with valid authentication to the Bitwarden Server can access sensitive billing information of any organization by exploiting the missing authorization checks. This includes Stripe-calculated tax totals, subscription statuses, and other billing details tied to real customer and subscription data. While the vulnerability does not allow privilege escalation or direct code execution, it exposes confidential financial data, potentially leading to privacy violations and business information disclosure.
Mitigation Recommendations
No official patch or remediation level has been confirmed or published by the vendor as of the provided data. Users should monitor the vendor's advisory for updates and apply the official fix once available. Until then, restrict authenticated user access to trusted personnel only and consider additional access controls or monitoring on billing-related endpoints to reduce exposure.
CVE-2026-57521: Missing Authorization in bitwarden server
Description
Bitwarden Server before 2026.5.0 contains a broken access control vulnerability that allows any authenticated user to access arbitrary organization billing data by supplying an arbitrary organizationId to the PreviewInvoiceController endpoints without membership or authorization checks. Attackers can exploit the missing ManageOrganizationBillingRequirement on the preview invoice endpoints to retrieve Stripe-computed tax totals, subscription status, and billing details derived from any target organization's real customer and subscription data.
CVSS v4.0
Score 5.3medium
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-57521 is an access control vulnerability in Bitwarden Server before version 2026.5.0. The vulnerability arises from missing authorization checks on the PreviewInvoiceController endpoints, allowing authenticated users to supply arbitrary organization IDs and access billing information of organizations they do not belong to. The missing ManageOrganizationBillingRequirement on these endpoints permits unauthorized retrieval of Stripe billing data such as tax totals and subscription status. This vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity.
Potential Impact
An attacker with valid authentication to the Bitwarden Server can access sensitive billing information of any organization by exploiting the missing authorization checks. This includes Stripe-calculated tax totals, subscription statuses, and other billing details tied to real customer and subscription data. While the vulnerability does not allow privilege escalation or direct code execution, it exposes confidential financial data, potentially leading to privacy violations and business information disclosure.
Mitigation Recommendations
No official patch or remediation level has been confirmed or published by the vendor as of the provided data. Users should monitor the vendor's advisory for updates and apply the official fix once available. Until then, restrict authenticated user access to trusted personnel only and consider additional access controls or monitoring on billing-related endpoints to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-06-24T15:58:58.537Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d89044853345fc16510b2
Added to database: 06/25/2026, 20:01:08 UTC
Last enriched: 07/15/2026, 10:18:52 UTC
Last updated: 08/08/2026, 16:29:26 UTC
Views: 144
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