CVE-2025-49047: DigitalOcean Spaces Sync XSS Vulnerability

CVE-2025-49047 Overview

CVE-2025-49047 is a stored cross-site scripting (XSS) vulnerability [CWE-79] in the keeross DigitalOcean Spaces Sync WordPress plugin (do-spaces-sync). The flaw affects all plugin versions up to and including 2.2.1. An authenticated attacker with high privileges can inject persistent JavaScript payloads that execute in the browsers of users who view the affected pages. Because the scope is changed, injected scripts can impact components beyond the vulnerable plugin itself. The issue is tracked publicly through Patchstack's vulnerability database.

Critical Impact
Successful exploitation allows an authenticated attacker to store malicious scripts that execute against site administrators or visitors, enabling session theft, forced actions, or defacement.

Affected Products

keeross DigitalOcean Spaces Sync (do-spaces-sync) plugin for WordPress
All versions from initial release through 2.2.1
WordPress sites with the plugin installed and activated

Discovery Timeline

2025-08-14 - CVE-2025-49047 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-49047

Vulnerability Analysis

The DigitalOcean Spaces Sync plugin fails to properly neutralize user-supplied input during web page generation. Input submitted through plugin configuration or data fields is stored server-side and later rendered without adequate output encoding or sanitization. When a browser loads the affected page, embedded JavaScript executes in the context of the WordPress site's origin.

Exploitation requires an authenticated actor with elevated privileges and involves user interaction to trigger the payload. Once stored, the malicious script persists across sessions and is served to every visitor of the affected view. The changed scope means the injected code can reach browser-side resources outside the direct control of the vulnerable component.

The EPSS data indicates a low near-term exploitation likelihood, and no public exploit or CISA KEV listing exists at this time.

Root Cause

The root cause is improper neutralization of input during web page generation [CWE-79]. The plugin trusts stored administrative input and echoes it into HTML contexts without applying WordPress escaping functions such as esc_html(), esc_attr(), or wp_kses(). This omission allows raw <script> tags and event-handler attributes to survive into the rendered DOM.

Attack Vector

The attack vector is network-based and requires an authenticated user with high privileges (for example, an administrator account) and victim interaction. An attacker submits a crafted payload into an input field exposed by the plugin's administrative interface. The payload is stored in the WordPress database and rendered later when another privileged user or visitor loads the affected page. The injected script then executes with the privileges of the viewing user, enabling session token theft, forced administrative actions, or the pivot to further site compromise. Full technical details are available in the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-49047

Indicators of Compromise

Unexpected <script> tags, javascript: URIs, or on* event handlers stored in WordPress wp_options or plugin-specific tables tied to do-spaces-sync.
Outbound browser requests from administrator sessions to unfamiliar third-party domains after visiting plugin configuration pages.
New or modified administrator accounts, plugins, or theme files following viewing of affected admin screens.

Detection Strategies

Inspect the WordPress database for plugin option values containing HTML or JavaScript syntax that should hold plain text or file identifiers.
Review web server access logs for POST requests to the plugin's settings endpoints that carry HTML-encoded or script-like payloads.
Correlate administrator session activity with anomalous outbound HTTP requests originating from browser sessions on /wp-admin/ pages.

Monitoring Recommendations

Enable file integrity monitoring on the WordPress installation to flag unauthorized changes to plugins, themes, and wp-config.php.
Alert on administrative role changes, new user creation, and modifications to option values managed by the do-spaces-sync plugin.
Deploy a web application firewall with signatures for stored XSS payload patterns targeting WordPress plugin endpoints.

How to Mitigate CVE-2025-49047

Immediate Actions Required

Identify all WordPress instances running the DigitalOcean Spaces Sync plugin at version 2.2.1 or earlier.
Deactivate the plugin if a patched release is not yet available and the functionality is not business-critical.
Rotate credentials and session tokens for any administrator accounts that accessed the plugin's settings pages during the exposure window.
Audit stored plugin option values in the WordPress database and remove any injected HTML or script content.

Patch Information

No fixed version is identified in the current NVD entry beyond confirmation that versions through 2.2.1 are vulnerable. Monitor the Patchstack Vulnerability Report and the plugin's official distribution channel for an updated release addressing CVE-2025-49047, and apply it immediately once available.

Workarounds

Restrict access to the WordPress administrator role using the principle of least privilege and enforce multi-factor authentication.
Deploy a Content Security Policy (CSP) that disallows inline scripts to reduce the impact of stored XSS payloads.
Place a web application firewall in front of the WordPress admin interface with rules that block script tags and event handlers in plugin request bodies.
Remove the plugin entirely if the DigitalOcean Spaces synchronization feature is not in active use.

bash

# Configuration example: identify vulnerable plugin version via WP-CLI
wp plugin get do-spaces-sync --field=version
wp plugin deactivate do-spaces-sync