AWS fis documentation change

Service: fis · 2025-11-13 · Documentation medium

File: fis/latest/userguide/doc-history.md

Summary

Added changelog entries for new scenarios, FlowsPercent parameter support, and updated AWS managed policies with additional EC2/ECS permissions

Security assessment

Documents updates to AWS managed policies adding ec2:DescribeSubnets and other permissions, which is security-related IAM documentation. No evidence this fixes a security vulnerability.

Diff

diff --git a/fis/latest/userguide/doc-history.md b/fis/latest/userguide/doc-history.md
index 4951c21e0..197763cae 100644
--- a//fis/latest/userguide/doc-history.md
+++ b//fis/latest/userguide/doc-history.md
@@ -10,0 +11,5 @@ Change| Description| Date
+[New scenarios](https://docs.aws.amazon.com/fis/latest/userguide/scenario-library-scenarios.html)|  You can now use the new "AZ: Application Slowdown" and "Cross-AZ: Traffic Slowdown" scenarios. | November 12, 2025  
+[New parameter for SSM documents](https://docs.aws.amazon.com/fis/latest/userguide/actions-ssm-agent.html)|  The **AWSFIS-Run-Network-Latency-Sources** and **AWSFIS-Run-Network-Packet-Loss-Sources** SSM documents now support the **flowsPercent** parameter. | November 12, 2025  
+[New parameter for ECS and EKS actions](https://docs.aws.amazon.com/fis/latest/userguide/fis-actions-reference.html)|  The **aws:ecs:task-network-latency** , **aws:ecs:task-network-packet-loss** , **aws:eks:pod-network-latency** and **aws:eks:pod-network-packet-loss** actions now support the **flowsPercent** parameter. | November 12, 2025  
+[AWS managed policy updates](https://docs.aws.amazon.com/fis/latest/userguide/security-iam-awsmanpol.html#security-iam-awsmanpol-updates)|  Updated managed policy [ AWSFaultInjectionSimulatorEC2Access ](https://docs.aws.amazon.com/fis/latest/userguide/security-iam-awsmanpol.html#AWSFaultInjectionSimulatorEC2Access) : Added **ec2:DescribeSubnets** permission. | November 12, 2025  
+[AWS managed policy updates](https://docs.aws.amazon.com/fis/latest/userguide/security-iam-awsmanpol.html#security-iam-awsmanpol-updates)|  Updated managed policy [ AWSFaultInjectionSimulatorECSAccess ](https://docs.aws.amazon.com/fis/latest/userguide/security-iam-awsmanpol.html#AWSFaultInjectionSimulatorECSAccess) : Added **ecs:DescribeContainerInstances** , **ec2:DescribeSubnets** and **ec2:DescribeInstances** permissions. | November 12, 2025