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Vulnerability record · CVE-2026-32638 · published 18 March 2026

CVE-2026-32638: Studiocms insecure direct object reference vulnerability

Studiocms · Studiocms

StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.4, the REST API `getUsers` endpoint in StudioCMS uses the attacker-controlled `rank` query parameter to decide whether owner accounts should be filtered from the result set. As a result, an admin token can request `rank=owner` and receive owner account records, including IDs, usernames, display names, and email addresses, even though the adjacent `getUser` endpoint correctly blocks admins from viewing owner users. This is an authorization inconsistency inside the same user-management surface. Version 0.4.4 fixes the issue.

2.7 CVSS 3.1 Low EPSS 0.38% · top 70.8% CWE-639 · Insecure direct object reference
2.7CVSS 3.1 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.4, the REST API `getUsers` endpoint in StudioCMS uses the attacker-controlled `rank` query parameter to decide whether owner accounts should be filtered from the result set. As a result, an admin token can request `rank=owner` and receive owner account records, including IDs, usernames, display names, and email addresses, even though the adjacent `getUser` endpoint correctly blocks admins from viewing owner users. This is an authorization inconsistency inside the same user-management surface. Version 0.4.4 fixes the issue.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/withstudiocms/studiocms/commit/aebe8bcb3618bb07c6753e3f5c982c1fe6adea64 Patch
https://github.com/withstudiocms/studiocms/releases/tag/[email protected] ProductRelease Notes
https://github.com/withstudiocms/studiocms/security/advisories/GHSA-xvf4-ch4q-2m24 ExploitMitigationVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-30944Studiocms insecure direct object reference vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.0, the /studiocms_api/dashboard/api-tokens endpoi…EPSS 0.53%7.2CVE-2026-32103Studiocms insecure direct object reference vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.3, the POST /studiocms_api/dashboard/create-reset…EPSS 0.43%7.2CVE-2026-32106Studiocms improper privilege management vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.3, the REST API createUser endpoint uses string-b…EPSS 0.36%7.1CVE-2026-30945Studiocms insecure direct object reference vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.0, the DELETE /studiocms_api/dashboard/api-tokens…EPSS 0.45%6.5CVE-2026-24134Studiocms insecure direct object reference vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Versions prior to 0.2.0 contain a Broken Object Level Authoriz…EPSS 0.34%6.3CVE-2026-32101Studiocms incorrect authorization vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.3.1, the S3 storage manager's isAuthorized() functi…EPSS 0.28%5.4CVE-2026-32104Studiocms insecure direct object reference vulnerabilityStudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.3, the updateUserNotifications endpoint accepts a…EPSS 0.30%8.4CVE-2026-55255Langflow IDOR in responses endpoint allows cross-user flow executionLangflow before 1.9.1 has an insecure direct object reference in the /api/v1/responses endpoint. An authenticated attacker can supply another user's …KEVEPSS 0.89%analysed

Source: NIST National Vulnerability Database (record CVE-2026-32638), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.