Upcasted S3 Offload – AWS S3, Digital Ocean Spaces, Backblaze, Minio and more <= 3.0.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting

2025-02-03 00:00

Abdi Pranata

Strategic Overview

Status

Patched in 3.0.4

Affected PluginUpcasted S3 Offload – AWS S3, DigitalOcean Spaces, Backblaze, MinIO Storage Integration

Affected Version<= 3.0.3

CVSS6.4Medium

CVECVE-2025-22676

View all Upcasted S3 Offload – AWS S3, DigitalOcean Spaces, Backblaze, MinIO Storage Integration vulnerabilities

Vulnerability Overview

The Upcasted S3 Offload – AWS S3, Digital Ocean Spaces, Backblaze, Minio and more plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 3.0.4, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2025-22676 https://www.wordfence.com/threat-intel/vulnerabilities/id/f535777b-eae3-4ea7-86f2-b6edfe9ad5ab

CVSS Vector

6.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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