CVE-2025-47039: Adobe Experience Manager XSS Vulnerability

CVE-2025-47039 Overview

CVE-2025-47039 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.22 and earlier, including AEM Cloud Service. A low-privileged attacker can inject malicious JavaScript into vulnerable form fields. The payload executes in a victim's browser when they load the page containing the injected field. The flaw is tracked under [CWE-79] and requires user interaction to trigger. Adobe addressed the issue in security bulletin APSB25-48.

Critical Impact

An authenticated attacker with low privileges can persist malicious scripts in AEM content, enabling session-scoped attacks against any user rendering the affected page.

Affected Products

• Adobe Experience Manager 6.5.22 and earlier (on-premise)
• Adobe Experience Manager Cloud Service (affected releases prior to the APSB25-48 fix)
• AEM form components that fail to sanitize user-supplied input

Discovery Timeline

• 2025-06-10 - CVE-2025-47039 published to the National Vulnerability Database
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-47039

Vulnerability Analysis

The vulnerability is a stored XSS flaw in Adobe Experience Manager form handling. AEM accepts input into form fields without sufficient output encoding or input sanitization. The malicious payload is persisted in AEM's content repository and re-served to subsequent visitors of the affected page.

Exploitation requires an authenticated account with low privileges, such as an author or contributor role. The attacker submits a payload containing HTML or JavaScript into a vulnerable field. When another user, potentially an administrator, browses the page, the browser renders the payload in the context of the AEM origin.

Because the scope is marked as changed, the injected script can affect resources beyond the vulnerable component, including cookies, session tokens, and Document Object Model (DOM) content served under the AEM domain.

Root Cause

The root cause is improper neutralization of input during web page generation [CWE-79]. AEM stores attacker-controlled markup and returns it to viewers without context-appropriate encoding. HTML control characters in form field values are treated as active markup instead of literal text.

Attack Vector

The attack proceeds over the network against an authenticated AEM instance. The attacker logs in with low-privilege credentials, edits a form component, and stores a script payload in a vulnerable field. A victim with higher privileges visits the affected page and the script executes in their browser session. See the Adobe Experience Manager Security Advisory for technical details.

Detection Methods for CVE-2025-47039

Indicators of Compromise

• Form field values or component properties in the AEM Java Content Repository (JCR) containing <script> tags, javascript: URIs, or event handlers such as onerror and onload
• Unexpected outbound requests from author or publisher browsers to attacker-controlled domains after loading AEM pages
• Audit log entries showing content edits by low-privileged accounts on shared or high-traffic pages

Detection Strategies

• Query the JCR for stored properties matching XSS signatures across cq:PageContent and form component nodes
• Enable and review AEM DispatcherLog and RequestLog entries for anomalous POSTs to /content/* from low-privileged authors
• Deploy a Content Security Policy (CSP) in report-only mode to surface inline script violations originating from AEM-rendered pages

Monitoring Recommendations

• Alert on new or modified form components authored by accounts that do not typically publish content
• Monitor administrator and author sessions for unexpected cookie exfiltration or DOM modification patterns
• Correlate AEM audit trails with browser telemetry to detect scripts executing under the AEM origin

How to Mitigate CVE-2025-47039

Immediate Actions Required

• Upgrade Adobe Experience Manager to the fixed version documented in Adobe security bulletin APSB25-48
• Audit existing form components and JCR content for previously stored XSS payloads and remove them
• Restrict content authoring permissions to trusted accounts and enforce multi-factor authentication for author instances

Patch Information

Adobe published a fixed release addressing CVE-2025-47039 in the Adobe Experience Manager Security Advisory APSB25-48. Administrators running AEM 6.5.22 or earlier should apply the corresponding Service Pack. AEM Cloud Service customers receive the fix through the standard release channel.

Workarounds

• Enforce a strict Content Security Policy that disallows inline scripts on AEM-rendered pages
• Configure the AEM Dispatcher to filter suspicious request payloads targeting form endpoints
• Reduce the number of accounts with content authoring privileges until the patch is deployed

# Example Content Security Policy header enforced via AEM Dispatcher or reverse proxy
Header always set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"