CVE-2026-57521

EUVD-2026-39542

25.06.2026, 20:17

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
VulnCheck	CNA	4.3 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 37.46%

Affected Products (NVD)

Vendor	Product	Version
bitwarden	server	𝑥 < 2026.5.0

𝑥

= Vulnerable software versions

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).

Vendor	Product	Version	Source
bitwarden	bitwarden	𝑥 < 2026.5.0	CNA

Known Exploits!

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

Common Weakness Enumeration

CWE-862 - Missing Authorization
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

References

https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890bee

https://github.com/bitwarden/server/pull/7583

https://github.com/bitwarden/server/releases/tag/v2026.5.0

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

https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewinvoicecontroller