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Vulnerability record · CVE-2026-57521 · published 25 June 2026

CVE-2026-57521: Bitwarden server missing authorization vulnerability

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.

5.3 CVSS 4.0 Medium EPSS 0.43% · top 65.3% CWE-862 · Missing authorization
5.3CVSS 4.0 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
14 Jul 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890bee Patch
https://github.com/bitwarden/server/pull/7583 Issue Tracking
https://github.com/bitwarden/server/releases/tag/v2026.5.0 Release Notes
https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idor ExploitPatchThird Party Advisory
https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewinvoicecontroller Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-57521), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.