CVE-2026-32638 json
StudioCMS REST getUsers Exposes Owner Account Records to Admin Tokens
published 2026-03-16 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12964 , GHSA-xvf4-ch4q-2m24
- cvss
- 2.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm studiocms 0.4.4
- studiocms studiocms 0.4.4
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/withstudiocms/studiocms/security/advisories/GHSA-xvf4-ch4q-2m24 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | studiocms | <0.4.4 |
0.4.4 |
Affected products
- withstudiocms studiocms
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/withstudiocms/studiocms/commit/aebe8bcb3618bb07c6753e3f5c982c1fe6adea64
web, patch
-
github.com
/withstudiocms/studiocms/security/advisories/GHSA-xvf4-ch4q-2m24
web, exploit, mitigation, vendor-advisory
-
github.com
/withstudiocms/studiocms/releases/tag/studiocms@0.4.4
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-32638
advisory
-
github.com
/withstudiocms/studiocms
package
Sources
- CVE List CVE-2026-32638
- GitHub Advisory GHSA-xvf4-ch4q-2m24
- NVD CVE-2026-32638
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.