CVE-2026-57521

MEDIUM 4.3

Bitwarden Server < 2026.5.0 Broken Access Control via PreviewInvoiceController

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	bitwarden
Product	server
Published	Jun 25, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

bitwarden / server

0 < 2026.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

sanjokkarki.com.np: https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idor github.com: https://github.com/bitwarden/server/releases/tag/v2026.5.0 github.com: https://github.com/bitwarden/server/pull/7583 github.com: https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890bee vulncheck.com: https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewinvoicecontroller

Credits

Sanjok Karki