Outage in Nexcess
Magento “PolyShell” File Upload Vulnerability
Resolved MinorIncident Report
Summary AI Generated
Nexcess identified a potential "PolyShell" unrestricted file upload vulnerability affecting Magento and Adobe Commerce platforms in their managed environment. The security issue impacted their platform updates and other components for 6.2 hours while teams assessed potential exposure across customer sites. The incident was resolved by implementing measures to prohibit execution of files that could exploit this vulnerability across their entire managed fleet.
We are aware of recent reports regarding a potential unrestricted file upload vulnerability, commonly referred to as “PolyShell”, affecting Magento and Adobe Commerce.
At this time, our teams are actively reviewing our environment to assess any potential impact and determine whether any systems/customer sites may be affected.
We will provide further updates as more information becomes available.
If you have any questions or concerns. You can reach us through the following channels:
Live Chat: https://my.nexcess.net/
Email: Nexcess Support
Components affected
Nexcess Platform Updates / OtherNeed to monitor Nexcess outages?
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Latest Updates ( sorted recent to last )
RESOLVED
9 days ago - at 03/18/2026 10:23PM
We have taken steps to prohibit execution of files exploiting the "PolyShell" unrestricted file upload vulnerability across our managed fleet.
If you have any questions or concerns. You can reach us through the following channels:
Live Chat: https://my.nexcess.net/
Email: support@nexcess.net
INVESTIGATING
9 days ago - at 03/18/2026 04:17PM
We are aware of recent reports regarding a potential unrestricted file upload vulnerability, commonly referred to as “PolyShell”, affecting Magento and Adobe Commerce.
At this time, our teams are actively reviewing our environment to assess any potential impact and determine whether any systems/customer sites may be affected.
We will provide further updates as more information becomes available.
If you have any questions or concerns. You can reach us through the following channels:
Live Chat: https://my.nexcess.net/
Email: Nexcess Support
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