StudioCMS REST getUsers Exposes Owner Account Records to Admin Tokens

Description

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.

Recommendation

Update the studiocms package to the latest compatible version. Followings are version details:

• Affected version(s): <= 0.4.3
• Patched version(s): 0.4.4

References

• GHSA-xvf4-ch4q-2m24
• CVE-2026-32638
• CWE-639
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• StudioCMS: IDOR — Admin-to-Owner Account Takeover via Password Reset Link Generation - CVE-2026-32103
• StudioCMS: REST API Missing Rank Check Allows Admin to Create Peer Admin Accounts - CVE-2026-32106
• StudioCMS S3 Storage Manager Authorization Bypass via Missing `await` on Async Auth Check - CVE-2026-32101
• Parse Server OAuth2 authentication adapter account takeover via identity spoofing - CVE-2026-30967

Tags:

npm

studiocms