CVE-2026-48263
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 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.
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 confidenceAdobe Experience Manager contains a stored Cross-Site Scripting (XSS) vulnerability in form fields. A low-privileged attacker can inject malicious JavaScript payloads into vulnerable input fields, which persist on the page and execute in victim browsers when they view the affected content. The scope change indicates the attack can impact resources outside 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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Identify installed AEM versionAccess the AEM Welcome page and click 'Version Information' or check the version.properties file in the crx-quickstart directory. Alternatively, query the system console at /system/console/bundles to view AEM version details.Affected if The installed version is 6.5.x at or below 6.5.25.0, or 2020.x at or below 2020.5.0, or exactly version 6.5.
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Locate form-based input fieldsReview AEM form components in the touch UI (aem.author.com/editor.html) or classic UI. Check Content Fragments, Experience Fragments, Adaptive Forms, and custom form components that accept user-submitted data.Affected if Form fields exist that accept input from low-privileged users without visible sanitization indicators.
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Audit user permissions on form workflowsNavigate to AEM Tools > Security > Permissions or use the useradmin console. Examine which user groups have access to create or edit form content and content fragments.Affected if Low-privileged users (contributors, content authors without admin rights) have create or modify permissions on form-enabled content paths.
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Search for suspicious script content in repositoryUse CRXDE Lite (crx/de) or the Query tool to search content nodes. Query property values containing common XSS patterns like '<script', 'javascript:', 'onerror=', 'onload=' in text fields.Affected if Content nodes contain encoded or plain text script tags, event handlers, or suspicious URI schemes in form field data.
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Inspect CSP header configurationCheck the Apache Sling CSP header configuration or dispatcher .conf files. Also review the org.apache.sling.security.impl.ReferrerFilter OSGi configuration for Same-Origin policy settings.Affected if Content Security Policy headers are not configured, or Same-Origin referrer filtering is disabled, leaving the environment vulnerable to XSS execution.
A user is affected if they run any AEM version 6.5.x at or below 6.5.25.0, or 2020.x at or below 2020.5.0, and have form fields accessible to low-privileged users without proper input 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.
From vendor dataImplement strict input validation and output encoding/sanitization on all form fields in AEM, particularly those accessible to low-privileged users. ApplyContent Security Policy headers to mitigate XSS execution.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-48263 — 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-2026-48263 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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