AWS documentdb: DocumentDB 8.0.1/8.0.0 patch notes: auth handshake hardening
Summary
Adds new October 19, 2026 release-note entries for Amazon DocumentDB 8.0.1 (engine 4.0.12164) and 8.0.0 (engine 4.0.12167), listing 'Security improvements — Authentication handshake hardening' plus latency-stability fixes, and notes the patch is auto-applied within 30 days. The prior September 15, 2026 entries are retained and their '[in progress]' markers removed.
Security assessment
The added line explicitly states the engine patch delivers 'Security improvements' in the form of 'Authentication handshake hardening', indicating a concrete weakness in the authentication handshake path was addressed in engine versions 4.0.12164/4.0.12167. No CVE or advisory ID is referenced, but the change is a security fix announcement affecting authentication, so it is treated as security-issue related rather than mere documentation of a feature or best practice.
Evidence
+ * **Security improvements** Authentication handshake hardening.
Diff
diff --git a/documentdb/latest/devguide/release-notes.md b/documentdb/latest/devguide/release-notes.md index 9053a4e..ef3c002 100644 --- a//documentdb/latest/devguide/release-notes.md +++ b//documentdb/latest/devguide/release-notes.md @@ -87 +87,7 @@ Date | Release notes -September 15, 2026 | **Security and stability improvements** **Amazon DocumentDB 8.0.1 (Engine Version: 4.0.11638) [in progress]** Amazon DocumentDB automatically applies this patch during your next maintenance window. +October 19, 2026 | **Security and stability improvements** **Amazon DocumentDB 8.0.1 (Engine Version: 4.0.12164) [in progress]** This engine patch provides the following improvements: + + * **Security improvements** Authentication handshake hardening. + * **Improved latency stability** Reduced intermittent latency spikes that could occur during routine internal configuration reloads. + +If you don't apply it sooner, Amazon DocumentDB automatically applies this patch during your next maintenance window 30 days after release. +September 15, 2026 | **Security and stability improvements** **Amazon DocumentDB 8.0.1 (Engine Version: 4.0.11638)** Amazon DocumentDB automatically applies this patch during your next maintenance window. @@ -125 +131,7 @@ Date | Release notes -September 15, 2026 | **Security and stability improvements** **Amazon DocumentDB 8.0.0 (Engine Version: 4.0.11440) [in progress]** **Bug fixes** This release includes the following bug fix: +October 19, 2026 | **Security and stability improvements** **Amazon DocumentDB 8.0.0 (Engine Version: 4.0.12167) [in progress]** This engine patch provides the following improvements: + + * **Security improvements** Authentication handshake hardening. + * **Improved latency stability** Reduced intermittent latency spikes that could occur during routine internal configuration reloads. + +If you don't apply it sooner, Amazon DocumentDB automatically applies this patch during your next maintenance window 30 days after release. +September 15, 2026 | **Security and stability improvements** **Amazon DocumentDB 8.0.0 (Engine Version: 4.0.11440)** **Bug fixes** This release includes the following bug fix: