CVE-2026-89049
A server-side request forgery issue due to improper validation of equivalent address representations in the port forwarding to remote hosts functionality in Am…
Impact
A server-side request forgery issue due to improper validation of equivalent address representations in the port forwarding to remote hosts functionality in Amazon AWS Systems Manager Agent (SSM Agent) before 3.3.4851.0 on all platforms might allow an authenticated remote user to bypass the remote destination denylist and reach link-local endpoints, potentially obtaining the temporary IAM role credentials of a managed instance and acting with that role's permissions from outside the instance, via a crafted destination host value that uses an alternate representation of a denied link-local address. To remediate this issue, users should upgrade to version 3.3.4851.0 or later.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Amazon | Amazon AWS Systems Manager Agent (SSM Agent) | before 3.3.4851.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.