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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890bee Patch
- https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idor Exploit, Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.3 · bitwardenNVD modified 2026-10-25 22:10
Affected (CPE criteria) 1
cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*
References 5
- 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 Exploit, Patch, Third Party Advisory
- https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewinvoicecontroller Third Party Advisory