CVE-2026-57521

Bitwarden Server < 2026.5.0 Broken Access Control via PreviewInvoiceController

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.

Affected

bitwarden · server

CVSS v4.0 VULNCHECK

5.3 MEDIUMCVSS: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:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

0.43% chance of exploitation in the next 30 days, 36th percentile

Published

2026-06-25

Updated

2026-07-14

Proof-of-concept exploits (1)

• https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idor

Security advisories

• https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewin…
• bitwarden/server/pull/7583

References

• CVE Record
• NVD entry