AWS parallelcluster: PCUI 2026.10.0 release notes: IAM ARN fix and dependency upgrades

Service: parallelcluster · 2026-10-09 · Security-related medium

File: parallelcluster/latest/ug/document_history.md

Summary

Adds release notes for PCUI version 2026.10.0, including a fix for GovCloud deployment failures caused by an incorrect partition in IAM ARNs and security upgrades of axios (1.8.2 to 1.20.0) and next (15.5.10 to 15.5.27).

Security assessment

The entry is explicitly listed under a 'Security:' heading and records third-party dependency upgrades (axios, next) that address known vulnerabilities in those packages, plus an IAM ARN partition fix for GovCloud. No CVE identifier is given, but the change is a concrete remediation of vulnerable dependencies.

Evidence

+  * Upgrade axios to version 1.20.0 (from 1.8.2).

Diff

diff --git a/parallelcluster/latest/ug/document_history.md b/parallelcluster/latest/ug/document_history.md
index 56b76fc..25d47d1 100644
--- a//parallelcluster/latest/ug/document_history.md
+++ b//parallelcluster/latest/ug/document_history.md
@@ -1146,0 +1147,10 @@ PCUI Change | Description | Date
+PCUI version 2026.10.0 released |  PCUI version 2026.10.0 released Bug fixes:
+
+  * Fix PCUI deployment failure in AWS GovCloud (US) Regions caused by an incorrect partition in IAM ARNs.
+
+Security:
+
+  * Upgrade axios to version 1.20.0 (from 1.8.2).
+  * Upgrade next to version 15.5.27 (from 15.5.10).
+
+|  October 8, 2026