CVE-2025-46993: Adobe Experience Manager XSS Vulnerability

CVE-2025-46993 Overview

CVE-2025-46993 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.22 and earlier. A low-privileged authenticated attacker can inject malicious JavaScript into vulnerable form fields. The payload executes in a victim's browser when they load the page containing the affected field. The flaw is tracked under CWE-79 and requires user interaction to trigger. Adobe published the fix in Security Advisory APSB25-48.

Critical Impact
An authenticated attacker with low privileges can persistently inject JavaScript into AEM form fields, leading to session compromise, credential theft, or defacement in the browsers of authenticated users who view the affected pages.

Affected Products

Adobe Experience Manager (on-premise) versions 6.5.22 and earlier
Adobe Experience Manager Cloud Service (affected releases per APSB25-48)
Web properties served through vulnerable AEM authoring or publishing instances

Discovery Timeline

2025-07-24 - CVE-2025-46993 published to the National Vulnerability Database
2025-07-24 - Adobe publishes Security Advisory APSB25-48 with patch details
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-46993

Vulnerability Analysis

The vulnerability is a stored XSS flaw in Adobe Experience Manager. AEM accepts input into certain form fields without adequate output encoding or sanitization. An attacker with low-privileged authenticated access can submit crafted input containing HTML or JavaScript. AEM persists the payload and later renders it back to any user who navigates to the affected page.

The scope is marked as changed, meaning the injected script executes in the browser context of a different security domain than the vulnerable component. This allows an attacker to steal session tokens, perform actions on behalf of the victim, or pivot into administrative interfaces if a privileged user views the page.

Root Cause

The root cause is improper neutralization of user-supplied input during web page generation, classified as CWE-79. AEM fails to encode or strip active content from data submitted to specific form fields. The unsanitized data is later reflected into the DOM without contextual output encoding, allowing script tags or event-handler attributes to execute.

Attack Vector

Exploitation requires network access to the AEM instance and an authenticated account with content-editing privileges. The attacker submits a JavaScript payload into a vulnerable form field, which AEM stores in the content repository. When any user, including higher-privileged administrators, loads the page hosting that field, the payload executes in their browser session. User interaction (page load) is required, but no additional social engineering is necessary once the payload is planted.

The vulnerability is described in prose only because no public proof-of-concept has been released. See the Adobe Security Advisory APSB25-48 for vendor-supplied technical details.

Detection Methods for CVE-2025-46993

Indicators of Compromise

Unexpected <script> tags, on* event handlers, or javascript: URIs stored in AEM content nodes or form-field properties
Outbound HTTP requests from authoring or publishing servers to attacker-controlled domains originating from rendered pages
Anomalous session activity from administrative accounts shortly after loading content pages, such as unexpected content changes or user creation

Detection Strategies

Audit AEM JCR (Java Content Repository) nodes for stored HTML or JavaScript in fields intended to hold plain text
Deploy a Content Security Policy (CSP) in report-only mode to surface inline script executions that violate policy
Correlate web-server access logs with authoring activity to identify content edits followed by anomalous script execution on delivery pages

Monitoring Recommendations

Enable AEM audit logging for content modifications and forward events to a central SIEM for review
Monitor for JCR queries or updates that write raw HTML into unexpected properties
Track failed CSP violation reports to identify injected scripts attempting to execute on client browsers

How to Mitigate CVE-2025-46993

Immediate Actions Required

Upgrade Adobe Experience Manager to the fixed version listed in Adobe Security Advisory APSB25-48
Review all low-privileged content-author accounts and rotate credentials for any showing suspicious activity
Scan the JCR for stored payloads in form-field properties and remove malicious content

Patch Information

Adobe addressed CVE-2025-46993 in the security release documented in APSB25-48. Administrators running AEM 6.5.22 or earlier on-premise instances should apply the corresponding service pack. Adobe Experience Manager Cloud Service customers receive the fix through the managed release channel. Verify the deployed version after patching and re-scan content for residual payloads.

Workarounds

Restrict content-authoring privileges to trusted personnel and enforce the principle of least privilege on AEM user groups
Enforce a strict Content Security Policy that disallows inline scripts and untrusted script sources on delivery domains
Place a web application firewall in front of the AEM authoring instance to filter script payloads in form submissions until patching is complete

bash

# Example: verify installed AEM version and service pack
curl -u admin:<password> \
  https://aem.example.com/system/console/status-productinfo.txt

# Example: strict CSP header for AEM delivery (dispatcher)
Header always set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'"