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CVE-2026-57521— Bitwarden Server < 2026.5.0 Broken Access Control via PreviewInvoiceController

Quick assessment

Affected
bitwarden server
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.

Bitwarden server是美国Bitwarden公司开源的一款密码管理服务器软件。 Bitwarden Server 2026.5.0之前版本存在授权问题漏洞，该漏洞源于访问控制不当，可能导致任何通过身份验证的用户通过向PreviewInvoiceController端点提供任意organizationId来访问任意组织账单数据，而无需进行成员资格或授权检查。

CVSS 4.3 · Medium EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
bitwarden server < 2026.5.0 affected
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I. Basic Information for CVE-2026-57521

Vulnerability Information
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Vulnerability Title
Bitwarden Server < 2026.5.0 Broken Access Control via PreviewInvoiceController
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Bitwarden Server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bitwarden server是美国Bitwarden公司开源的一款密码管理服务器软件。 Bitwarden Server 2026.5.0之前版本存在授权问题漏洞，该漏洞源于访问控制不当，可能导致任何通过身份验证的用户通过向PreviewInvoiceController端点提供任意organizationId来访问任意组织账单数据，而无需进行成员资格或授权检查。
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
bitwarden server 0 ~ 2026.5.0 -

II. Public POCs for CVE-2026-57521

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III. Intelligence Information for CVE-2026-57521

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Patches & Fixes for CVE-2026-57521 (2)

Vendor Advisories for CVE-2026-57521 (1)

Security Blog Posts for CVE-2026-57521 (1)

Vendor Pages for CVE-2026-57521 (1)

Same Patch Batch · bitwarden · 2026-06-25 · 3 CVEs total

CVE-2026-57520 7.1 HIGH Bitwarden Server < 2026.5.0 Privilege Escalation via Bulk User Remove Endpoint
CVE-2026-57522 3.5 LOW Bitwarden Server < 2026.5.0 JSON Injection via Webhook Templates

IV. Related Vulnerabilities

Same product: server
Same vendor: bitwarden
Same weakness: CWE-862

V. Comments for CVE-2026-57521

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