How severe is CVE-2026-32101?

CVE-2026-32101 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.

Is CVE-2026-32101 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32101?

CVE-2026-32101 affects Studiocms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32101?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-32101 have an EU (EUVD) identifier?

Yes. CVE-2026-32101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11367.

When was CVE-2026-32101 published?

CVE-2026-32101 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-32101

CVE-2026-32101 is a high-severity vulnerability in Studiocms with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11367
Weakness: CWE-863
Affected product: Studiocms
Published: 2026-03-11
Last modified: 2026-06-17

Description

StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.3.1, the S3 storage manager's isAuthorized() function is declared async (returns Promise<boolean>) but is called without await in both the POST and PUT handlers. Since a Promise object is always truthy in JavaScript, !isAuthorized(type) always evaluates to false, completely bypassing the authorization check. Any authenticated user with the lowest visitor role can upload, delete, rename, and list all files in the S3 bucket. This vulnerability is fixed in 0.3.1.

Frequently asked questions

What is CVE-2026-32101?: StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.3.1, the S3 storage manager's isAuthorized() function is declared async (returns Promise<boolean>) but is called without await in both the POST and PUT handlers. Since a Promise object is always truthy in JavaScript, !isAuthorized(type) always evaluates to false, completely bypassing the authorization check. Any authenticated user with the lowest visitor role can upload, delete, rename, and list all files in the S3 bucket. This vulnerability is fixed in 0.3.1.
How severe is CVE-2026-32101?: CVE-2026-32101 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2026-32101 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32101?: CVE-2026-32101 affects Studiocms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32101?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-32101 have an EU (EUVD) identifier?: Yes. CVE-2026-32101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11367.
When was CVE-2026-32101 published?: CVE-2026-32101 was published on 2026-03-11 and last updated on 2026-06-17.

References

https://github.com/withstudiocms/studiocms/security/advisories/GHSA-mm78-fgq8-6pgr

Affected products (1)

cpe:2.3:a:studiocms:studiocms:*:*:*:*:*:*:*:*

More vulnerabilities in Studiocms

CVE-2026-30944 — High (CVSS 8.8): StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.0, the…
CVE-2026-30945 — High (CVSS 7.1): StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.0, the DELETE…
CVE-2026-32103 — Medium (CVSS 6.8): StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.3, the POST…
CVE-2026-24134 — Medium (CVSS 6.5): StudioCMS is a server-side-rendered, Astro native, headless content management system. Versions prior to 0.2.0 contain…
CVE-2026-32104 — Medium (CVSS 5.4): StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.3, the…
CVE-2026-32106 — Medium (CVSS 4.7): StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.4.3, the REST API…

All CVEs affecting Studiocms →

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