CVE-2026-57521
Bitwarden Server < 2026.5.0 Broken Access Control via PreviewInvoiceController
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.
INFO
Published Date :
June 25, 2026, 8:17 p.m.
Last Modified :
July 14, 2026, 10:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Bitwarden Server to version 2026.5.0 or later.
- Ensure all organization billing data access is properly restricted.
- Review and implement missing authorization checks for billing endpoints.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-57521.
| URL | Resource |
|---|---|
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-57521 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-57521
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-57521 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-57521 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://github.com/bitwarden/server', 'vendor': 'bitwarden', 'product': 'server', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2026.5.0', 'versionType': 'semver'}], 'defaultStatus': 'affected'}] [{'repo': 'https://github.com/bitwarden/server', 'vendor': 'bitwarden', 'product': 'server', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2026.5.0', 'versionType': 'semver'}], 'packageURL': 'pkg:github/bitwarden/server', 'defaultStatus': 'affected'}] -
Initial Analysis by [email protected]
Jun. 27, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:* versions up to (excluding) 2026.5.0 Added Reference Type VulnCheck: https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890bee Types: Patch Added Reference Type VulnCheck: https://github.com/bitwarden/server/pull/7583 Types: Issue Tracking Added Reference Type VulnCheck: https://github.com/bitwarden/server/releases/tag/v2026.5.0 Types: Release Notes Added Reference Type VulnCheck: https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idor Types: Exploit, Patch, Third Party Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewinvoicecontroller Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 26, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-57521', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-26T13:21:03.930162Z'} -
New CVE Received by [email protected]
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/bitwarden/server', 'vendor': 'bitwarden', 'product': 'server', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2026.5.0', 'versionType': 'semver'}], 'defaultStatus': 'affected'}] Added 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-862 Added Reference https://github.com/bitwarden/server/commit/0a3d9f9deb7d407503207b0d0ca8f0165a890bee Added Reference https://github.com/bitwarden/server/pull/7583 Added Reference https://github.com/bitwarden/server/releases/tag/v2026.5.0 Added Reference https://sanjokkarki.com.np/blog/bitwarden-preview-invoice-idor Added Reference https://www.vulncheck.com/advisories/bitwarden-server-broken-access-control-via-previewinvoicecontroller