What is the CVSS score of CVE-2026-47990?

CVE-2026-47990 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-2026-47990

EUVD-2026-35613 MEDIUM

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

2026-06-09 psirt@adobe.com

GHSA-957g-c2rc-xhwr

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 - 19:15 vuln.today

DescriptionCVE.org

Adobe Experience Manager versions 6.5.24, LTS SP1, 2026.04 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field. Scope is changed.

AnalysisAI

Stored Cross-Site Scripting in Adobe Experience Manager versions 6.5.24, LTS SP1, 2026.04 and earlier allows a low-privileged authenticated attacker to inject persistent malicious JavaScript into vulnerable form fields. When any user browses to a page containing the poisoned field, the script executes in their browser context. The CVSS scope change (S:C) signals that exploitation crosses a security boundary - a content-authoring account can target higher-privileged administrative sessions - amplifying the effective impact beyond the medium CVSS score of 5.4. No public exploit or CISA KEV listing has been identified at time of analysis.

Technical ContextAI

Adobe Experience Manager (AEM) is an enterprise web content management and digital experience platform. CWE-79 (Improper Neutralization of Input During Web Page Generation) is the root cause class: user-supplied input stored server-side is later rendered without adequate output encoding, causing the browser to interpret attacker-controlled data as executable script. The CVSS vector AV:N/AC:L/PR:L/UI:R/S:C confirms the attack surface is network-accessible, requires low complexity, a low-privileged account for injection, and user interaction for triggering - a classic stored XSS profile. The scope change (S:C) is technically significant: it indicates the injected script executes in a browsing context different from the vulnerable component itself, enabling cross-context attacks such as session hijacking against administrators. EUVD-2026-35613 corroborates affected version bounds as all releases up to and including 2026.04.

RemediationAI

The primary remediation is to apply the patch documented in Adobe Security Bulletin APSB26-56, available at https://helpx.adobe.com/security/products/experience-manager/apsb26-56.html. An exact fixed release version was not independently confirmed in the available data - consult the bulletin directly to identify the target Service Pack or Cloud Release. While awaiting patching, restrict the author and contributor roles to only trusted internal users, reducing the pool of accounts that could inject payloads. Content Security Policy (CSP) headers can limit the damage of successful XSS injection by restricting script execution origins, but this is a defense-in-depth measure and does not remediate the underlying vulnerability. Reviewing and auditing recently submitted form content for unexpected script tags is advisable as a detection step. No workarounds that fully eliminate the vulnerability without patching have been identified in the available data.