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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bitwarden | Server | < 2026.5.0 |
Related Weaknesses (CWE)
References
- https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890Patch
- https://github.com/bitwarden/server/pull/7583Issue Tracking
- https://github.com/bitwarden/server/releases/tag/v2026.5.0Release Notes
- https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idorExploitThird Party AdvisoryPatch
- https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-Third Party Advisory
FAQ
What is CVE-2026-57521?
CVE-2026-57521 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 organizationI...
How severe is CVE-2026-57521?
CVE-2026-57521 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-57521?
Check the references section above for vendor advisories and patch information. Affected products include: Bitwarden Server.