CVE-2026-30945 StudioCMS: IDOR — Arbitrary API Token Revocation Leading to Denial of Service
Authenticated editors can revoke any user's API tokens, causing denial of service for critical integrations and automations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-30945?
CVE-2026-30945 is a high-severity missing authorization vulnerability in withstudiocms studiocms, published on 10 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.0, the DELETE /studiocms_api/dashboard/api-tokens endpoint allows any authenticated user with editor privileges or above to revoke API tokens belonging to any other user, including admin and owner accounts. The handler accepts tokenID and userID directly from the request payload without verifying token ownership, caller identity, or role hierarchy. This enables targeted denial of service against critical integrations and automations. This vulnerability is fixed in 0.4.0.
Which versions are affected by CVE-2026-30945?
2 open source packages ship an affected version, including studiocms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
studiocms npm | All versions | 0.4.0 |
studiocms npm | All versions | 0.4.0 |
Products include Studiocms Studiocms.
How do I fix CVE-2026-30945?
Upgrade studiocms to 0.4.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-30945 being exploited?
There is no known exploitation of CVE-2026-30945 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in withstudiocms studiocms
- CVE-2026-30944 StudioCMS Affected by Privilege Escalation via Insecure API Token Generation
- CVE-2026-32101 StudioCMS S3 Storage Manager Authorization Bypass via Missing `await` on Async Auth Check
- CVE-2026-32103 StudioCMS: IDOR — Admin-to-Owner Account Takeover via Password Reset Link Generation
- CVE-2026-24134 StudioCMS has an Authorization Bypass Through User-Controlled Key
- CVE-2026-32104 StudioCMS: IDOR in User Notification Preferences Allows Any Authenticated User to Modify Any User's Settings
Sources
Also known as GHSA-8rgj-vrfr-6hqr.