CVE-2025-46988: Adobe Experience Manager XSS Vulnerability

CVE-2025-46988 Overview

Adobe Experience Manager (AEM) versions 6.5.22 and earlier contain a stored Cross-Site Scripting (XSS) vulnerability [CWE-79]. A low-privileged attacker can inject malicious JavaScript into vulnerable form fields. The payload executes in a victim's browser when they visit a page containing the compromised field. The flaw affects both on-premises AEM deployments and the AEM Cloud Service. Exploitation requires user interaction, and the impact crosses a security scope boundary from the attacker's context to the victim's session.

Critical Impact
Authenticated attackers can persist JavaScript in form fields to hijack victim sessions, steal authentication tokens, or perform actions in the AEM administrative interface on behalf of higher-privileged users.

Affected Products

Adobe Experience Manager 6.5.22 and earlier (on-premises)
Adobe Experience Manager Cloud Service (AEM CS)
AEM Forms components handling user-supplied field input

Discovery Timeline

2025-06-10 - CVE-2025-46988 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-46988

Vulnerability Analysis

The vulnerability is a stored XSS flaw in Adobe Experience Manager form field handling. Server-side input validation and output encoding are insufficient for content submitted to certain form fields. An authenticated attacker with low privileges submits a payload containing HTML or JavaScript, and the server persists that payload without adequate sanitization.

When another user later renders the page containing the affected field, the browser interprets the stored payload as executable script. Because the exploit crosses a scope boundary, script executed in a victim's authenticated session can act with that victim's privileges. Typical outcomes include session token theft, forced actions in the AEM authoring interface, and redirection to attacker-controlled infrastructure.

User interaction is required — the victim must browse to the affected page — but no additional social engineering is needed once the payload is stored. Refer to Adobe Security Advisory APSB25-48 for vendor technical details.

Root Cause

The root cause is improper neutralization of input during web page generation [CWE-79]. Form field content submitted by authenticated users is stored and later rendered without context-appropriate output encoding. Script tags, event handlers, or other active markup survive the write path and execute on read.

Attack Vector

The attack is delivered over the network by an authenticated user with low privileges. The attacker submits a crafted payload to a vulnerable form field within an AEM authoring or content workflow. When a second user with a valid session views the persisted content, the payload executes in that user's browser context. No verified public proof-of-concept is available at this time.

Detection Methods for CVE-2025-46988

Indicators of Compromise

Form field content containing <script> tags, on* event handler attributes, or javascript: URIs stored in the AEM Java Content Repository (JCR).
Outbound requests from AEM author or publish instances to unfamiliar domains originating from browser sessions of privileged users.
Unexpected session token or cookie exfiltration patterns in web proxy logs following visits to AEM content pages.

Detection Strategies

Query the JCR for form-related nodes containing HTML control characters or script markers in string properties.
Deploy Content Security Policy (CSP) reporting endpoints and monitor script-src violation reports from AEM authoring surfaces.
Review web application firewall logs for POST requests to AEM form endpoints containing encoded or raw script payloads.

Monitoring Recommendations

Correlate authoring account activity with anomalous outbound HTTP traffic from browsers accessing AEM content.
Alert on privileged AEM users whose sessions generate DOM-based requests to external hosts shortly after visiting content pages.
Track the AEM version and patch level across all author, publish, and dispatcher instances to identify unpatched systems.

How to Mitigate CVE-2025-46988

Immediate Actions Required

Upgrade Adobe Experience Manager to the fixed version identified in Adobe Security Advisory APSB25-48.
Audit existing form content in the JCR for stored script payloads and remove or neutralize any that are found.
Rotate authentication tokens and session cookies for any privileged users who accessed affected pages before patching.

Patch Information

Adobe released fixes as part of the APSB25-48 security bulletin covering AEM 6.5.22 and earlier and AEM Cloud Service. Customers on AEM Cloud Service receive the fix through Adobe's managed update pipeline. On-premises operators must apply the AEM Service Pack referenced in the advisory. See Adobe Security Advisory APSB25-48 for exact package versions and installation guidance.

Workarounds

Restrict low-privileged authoring accounts from editing form components until the patch is applied.
Enforce a strict Content Security Policy on AEM authoring and publish domains to limit execution of inline and third-party scripts.
Configure the AEM dispatcher and upstream web application firewall to reject requests containing script markers in form field parameters.

bash

# Example dispatcher filter to block script markers in form POSTs
/0100 { /type "deny" /method "POST" /url "*/content/forms/*" /query "*<script*" }
/0101 { /type "deny" /method "POST" /url "*/content/forms/*" /query "*javascript:*" }