CVE-2026-24134: StudioCMS has an Authorization Bypass Through User-Controlled Key

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-28 · updated 2026-06-17
Weakness: CWE-639

Description

StudioCMS is a server-side-rendered, Astro native, headless content management system. Versions prior to 0.2.0 contain a Broken Object Level Authorization (BOLA) vulnerability in the Content Management feature that allows users with the "Visitor" role to access draft content created by Editor/Admin/Owner users. Version 0.2.0 patches the issue.

Affected products

withstudiocms studiocms: before 0.2.0 — fixed in 0.2.0

How to fix

Upgrade to a fixed version: withstudiocms studiocms 0.2.0. Check the vendor advisory for mitigations.

References

https://github.com/withstudiocms/studiocms/commit/efc10bee20db090fdd75463622c30dda390c50ad
https://github.com/withstudiocms/studiocms/releases/tag/studiocms%400.2.0
https://github.com/withstudiocms/studiocms/security/advisories/GHSA-8cw6-53m5-4932

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