# Argo CD v3.5.1 — Release & Upgrade Intelligence
- **Product:** Argo CD (https://argo-cd.readthedocs.io)
- **Version:** v3.5.1
- **Released:** Aug 12, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/argocd/updates/v3.5.1/

## Executive Summary (TL;DR)
Argo CD v3.5.1. Source highlight: kubectl create namespace argocd

## Bug Fixes
- 33f3bc59faeec96204cda3a5ae211be17d15f1ac: fix(appset): stop progressive sync reconciling in a tight loop (#27577) (#29139) (@himeshp)
- d358e75b3539c3fc43eb2372317bde7a0d01c55f: fix(appset): verify terminating Applications against the API server (#29042) (#29138) (@himeshp)
- ecf37373a9d3a72b259a73abfee7ce27226b960a: fix(controller): cherry-pick treat `timeout.reconciliation=0` as disabled soft expiry (#27683) (#29007) (@aali309)
- 978fa65006565baaaf35894918fd661d610f5953: fix(controller): reuse server-side diff result when masking Secret data (#27858) (#29074) (@1ovsss)
- f399c84f85fc4e3a19ac1e8314ff111493d26fee: fix(controller): use diff cache when timeout.reconciliation is disabled (cherry-pick #29073 for 3.5) (#29158) (@argo-cd-cherry-pick-bot[bot])
- 960bed7f2efcdc8b43fe392dd6d17cf95507c9f2: fix(server): prevent SSD CLI secret mask spoofing (cherry-pick #29089 for 3.5) (#29130) (@argo-cd-cherry-pick-bot[bot])