What is the CVSS score of CVE-2026-48256?

CVE-2026-48256 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Adobe Experience Manager CVE-2026-48256

EUVD-2026-35633 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-06-09 psirt@adobe.com

GHSA-pvvq-gf45-7jq5

XSS Adobe Experience Manager

5.4

CVSS 3.1 · Vendor: adobe

Severity by source

Vendor (adobe) PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from Vendor (adobe) · only source for this CVE.

CVSS VectorVendor: adobe

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Jun 09, 2026 - 19:13 vuln.today

DescriptionCVE.org

Adobe Experience Manager versions 6.5.24, LTS SP1, 2026.04 and earlier are affected by a DOM-based Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this issue by manipulating the DOM environment to execute malicious JavaScript within the context of the victim's browser. Exploitation of this issue requires user interaction in that a victim must visit a crafted webpage. Scope is changed.

AnalysisAI

DOM-based Cross-Site Scripting in Adobe Experience Manager (AEM) versions 6.5.24, LTS SP1, and 2026.04 and earlier allows an authenticated attacker with low privileges to execute arbitrary JavaScript in a victim's browser by manipulating the DOM environment through a crafted webpage. The CVSS vector confirms scope change (S:C), meaning the injected script can affect browser contexts beyond the vulnerable AEM page itself - enabling session hijacking, credential theft, or unauthorized actions performed as the victim. No public exploit code or active exploitation has been identified at time of analysis, and exploitation requires user interaction, limiting opportunistic mass exploitation.

Technical ContextAI

Adobe Experience Manager is an enterprise-grade CMS and digital asset management platform widely deployed in large organizations. DOM-based XSS (CWE-79) is distinct from reflected or stored XSS in that the vulnerable code path exists entirely in client-side JavaScript: attacker-controlled data flows from a DOM source (such as location.hash, document.referrer, or URL parameters) into an unsafe DOM sink (innerHTML, eval, document.write, etc.) without server-side involvement. This means WAFs and server-side input validation are typically ineffective as defenses, since the malicious payload never reaches the server. The CVSS vector AV:N/AC:L/PR:L/UI:R/S:C is consistent with a client-side injection reaching across iframe or origin boundaries, explaining the scope change. EUVD-2026-35633 corroborates the affected version range as all AEM releases up to and including 2026.04.

RemediationAI

The primary remediation is to apply the patch referenced in Adobe Security Bulletin APSB26-56, available at https://helpx.adobe.com/security/products/experience-manager/apsb26-56.html. The exact patched version number was not independently confirmed from the provided data - consult the advisory directly to identify the specific target version for your AEM release train (6.5 LTS or cloud 2026.x). If immediate patching is not feasible, the following compensating controls are relevant: restrict AEM author environments to trusted internal networks or VPN to reduce the attacker's ability to send crafted links to internal users; enforce strict Content-Security-Policy (CSP) headers on AEM responses to limit which script sources are trusted, noting that AEM's extensibility may require allowlisting some origins and testing is essential before deploying CSP broadly; and train users to be suspicious of AEM-origin URLs received via external channels. Because this is DOM-based XSS, server-side WAF rules provide limited protection and should not be relied upon as a sole control.