Impact Score: 5/10
OpenTofu v1.12.5 — Release Notes & Engineering Impact
Source available — automated, not human-reviewed
Component: opentofu · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
OpenTofu v1.12.5. Source highlight: SECURITY ADVISORIES:
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
🔧 Bug Fixes & Patches (1)
- Fixed bug where implicit moves and provider address changes would incorrectly cause providers.MovedResourceState to be used in place of providers.UpgradeResourceState (#4375)
📄 View Raw Release Notes (Original Developer Log)
SECURITY ADVISORIES:
* Previous releases in the v1.12 series could be affected by several vulnerabilities:
* The Encrypted Client Hello implementation (which is used by OpenTofu through the go stdlib) would leak the pre-shared key identities during the handshake,
allowing a passive network observer who can collect handshakes to de-anonymize the hostname of the server, even when ECH was being used.
This is fixed now by ([#4363](https://github.com/opentofu/opentofu/pull/4363))
BUG FIXES:
- Fixed bug where implicit moves and provider address changes would incorrectly cause providers.MovedResourceState to be used in place of providers.UpgradeResourceState ([#4375](https://github.com/opentofu/opentofu/pull/4375))
**Full Changelog**: https://github.com/opentofu/opentofu/compare/v1.12.4...v1.12.5