CVE-2026-48253
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 is 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 · moderate confidenceA DOM-based Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager allows attackers to manipulate the DOM environment and execute malicious JavaScript within a victim's browser. The vulnerability requires user interaction (victim visiting a crafted webpage) and represents a scope change, indicating impact beyond the vulnerable component.
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<= 2020.5.0= 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.
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Confirm Adobe Experience Manager is installedCheck for AEM by accessing the login page or checking for aem or cq process running on common ports (4502, 4503) or inspect HTTP response headers for 'Server: Adobe Experience Manager' or 'X-Adobe-Content' headersAffected if AEM is not present on the system
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Determine installed AEM versionAccess the AEM Welcome page (/aem/start.html) or check the version.properties file in the crx-quickstart folder, or query the AEM version via the system console (/system/console/configMgr)Affected if Unable to retrieve the installed version number
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Compare version against affected rangesMatch the installed version to the affected ranges: 6.5.x versions up to and including 6.5.25.0, any 2020.x version up to and including 2020.5.0, or base version 6.5 (without subversion)Affected if Installed version is 6.5.x where x <= 25, OR is 2020.x where x <= 5, OR is exactly 6.5 without subversion numbers
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Identify user input handling componentsReview custom AEM components, Sling models, or HTL templates that accept and render user-controlled data into the DOM without sanitizationAffected if Custom or third-party components that insert unsanitized request parameters or form inputs directly into the DOM are present
The environment is affected if Adobe Experience Manager is installed with a version matching <= 6.5.25.0, <= 2020.5.0, or exactly 6.5, and the application processes user input in ways that could trigger the DOM-based XSS.
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.
From vendor dataFix DOM-based XSS by sanitizing all user-controlled data before DOM insertion, using safe DOM APIs, and implementing Content Security Policy (CSP) headers to mitigate XSS execution.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-48253 — 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-2026-48253 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
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- 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
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