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SCA: security update for @studiocms/s3-storage (GHSA-mm78-fgq8-6pgr)

medium Tenable Cloud Security Plugin ID 438706

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-32101)

Solution

Update the @studiocms/s3-storage library and its related packages to version 0.3.1 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 438706

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 3/12/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.68

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2026-32101

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/12/2026

Vulnerability Publication Date: 3/11/2026

Reference Information

CVE: CVE-2026-32101

cwe: CWE-863