CVE-2026-48263 experience manager vulnerability
Adobe 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.
Browse Browser security risksQuick answer
adobe experience manager should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- AEM Cloud Service 2026.5.0 and earlier
Fixed versions
- AEM Cloud Service 2026.6.0
How to fix it
Adobe Experience Manager is affected by CVE-2026-48263, a stored cross-site scripting flaw in vulnerable form fields. A low-privileged attacker can store script that runs when another user opens the affected AEM content. Confirm AEM as a Cloud Service has received release 2026.6.0 or later; Adobe says this CVE affects only the AEMaaCS releases indicated in APSB26-74. Prioritize exposed production systems and accounts that can reach the affected feature.
- Inventory every Adobe Experience Manager deployment, version, exposed endpoint, environment, and owner.
- Inventory AEM Cloud Service, AEM 6.5 LTS, and AEM 6.5 deployments, then match each one to the affected products in APSB26-74.
- Confirm AEM as a Cloud Service has received release 2026.6.0 or later; Adobe says this CVE affects only the AEMaaCS releases indicated in APSB26-74.
- Adobe lists no workaround in APSB26-74. Until the update is complete, limit low-privileged author access, remove affected forms from public use, and add review for active content.
- Review relevant logs and search form fields, content revisions, and author activity for scripts, event handlers, and encoded active content.
- Remove injected content, clear AEM and CDN caches, revoke exposed sessions, and review actions performed by users who viewed the affected page.
- Restart or redeploy affected AEM services as required by Adobe, clear AEM and CDN caches, and keep temporary controls until validation is complete.
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Verify the fix
- Confirm AEM Cloud Service is on release 2026.6.0 or later and the deployment record matches APSB26-74.
- Confirm stored active content is rejected or escaped and no script runs when the affected field is rendered.
- Confirm AEM Author and Publish exposure, Dispatcher and CDN/WAF rules, outbound access, and service-account permissions follow the deployment's approved security baseline.
- Review logs after remediation for continued exploit attempts or signs that the issue was used before the fix.
- Rerun the relevant dependency, platform, vendor, or Fixnx security check and document the result, affected assets, change record, and cleanup evidence for CVE-2026-48263.
Related categories
Related security risks
More published guidance from the same primary category.
Trusted references
FAQ
What is affected by CVE-2026-48263?
adobe experience manager versions listed as affected should be reviewed: AEM Cloud Service 2026.5.0 and earlier.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.