CVE-2026-48271
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAdobe 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceAdobe Experience Manager versions 6.5.24, LTS SP1, 2026.04 and earlier contain a DOM-based Cross-Site Scripting (XSS) vulnerability. Attackers can manipulate the DOM environment to execute malicious JavaScript within the victim's browser. Successful exploitation requires user interaction, specifically that the victim visits a crafted webpage, and the scope is changed.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 6.5.25.0< 2026.5.0= 6.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Check installed Adobe Experience Manager versionAccess the AEM Web Console Bundle information page at /system/console/bundles or check the version via the AEM Welcome page at /libs/granite/ui/content/shell/header.html (look for version info in the footer or navigate to Help > About Adobe Experience Manager)Affected if The installed version is less than 6.5.25.0, less than 2026.5.0, or exactly 6.5.x LTS SP1 (any version before the patched releases)
-
Identify custom client-side code or client librariesNavigate to /libs/cq/clientlibs.html or inspect the /apps directory for custom client libraries under /apps/<your-project>/clientlib-* folders. Review any custom JavaScript files for DOM manipulation logic.Affected if Custom client libraries exist that may contain JavaScript code interacting with the DOM without proper sanitization
-
Search for unsafe DOM sink usage in custom codeSearch through custom JavaScript files (found in /apps or as client libraries) for dangerous DOM sinks such as: innerHTML, outerHTML, document.write, insertAdjacentHTML, eval(), or jQuery's .html() method. Use grep or a code search tool across the /apps directory.Affected if Custom code contains any of these unsafe sinks without proper output encoding or sanitization before DOM insertion
-
Review custom components for user input reflectionInspect custom AEM components under /apps/<project>/components for JSP or HTL files that accept user input and render it to the page. Check if any component scripts echo request parameters or content to the output without encoding.Affected if Custom components reflect user-supplied data to the page without proper encoding (HTL: ${} vs ${context='html'})
You are affected if your AEM version is below 6.5.25.0 or 2026.5.0 AND you have custom client-side code or components that use unsafe DOM manipulation without proper sanitization.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped6.5.25.02026.5.0
Update Adobe Experience Manager to a version beyond 6.5.24, LTS SP1, or 2026.04 once the vendor patch is available. Additionally, implement robust Content Security Policy (CSP) headers and validate/sanitize DOM inputs to mitigate XSS attacks.
Upgrade to AEM 6.5.25.0 (or later 6.5.x LTS) or AEM 2026.5.0 (or later 2026.x release)
- 1. Identify the current Adobe Experience Manager version by checking /system/console/configMgr or the crx/de lite console
- 2. For AEM 6.5.x (LTS) users: Plan upgrade to version 6.5.25.0 or later
- 3. For AEM 2026.x users: Plan upgrade to version 2026.5.0 or later
- 4. Before upgrading in production, test the new version in a staging environment to verify compatibility with existing custom code and configurations
- 5. Review Adobe Experience Manager release notes for 6.5.25.0 and 2026.5.0 to understand any required configuration changes after upgrade
- 6. After upgrading, verify the XSS vulnerability is remediated by testing that the DOM manipulation vector no longer executes malicious scripts
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-48271 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-48271 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data