Technology News Today: Claude Code 2.1.291, Chrome 155 and Fresh Security Advisories

Technology News Today: Claude Code 2.1.291, Chrome 155 and Fresh Security Advisories

Date: October 6, 2026
Coverage: October 5–6, 2026
Primary focus: Events and releases dated October 6, 2026

Introduction

Today's report is intentionally fresh: The main developer stories today are Claude Code 2.1.291, the start of the Chrome 155 Stable rollout, a new Gemini CLI Nightly build, and fresh October 6 security advisories.

Quick Take

• 🤖 Claude Code 2.1.291 released today with two regression fixes.
• 🌐 Chrome 155 Stable rollout starts today; enterprise chrome.debugger behavior is stricter.
• 🧪 Gemini CLI v0.64.0-nightly.20261006... released today as Nightly/Pre-release.
• 🔐 GitHub has fresh Critical, High and Moderate advisories dated October 6.
• 🟢 No new Stable Node.js, Deno or Bun release was found today.

1. Claude Code 2.1.291

Version: 2.1.291 — Stage: Stable — Date: October 6, 2026

Anthropic released Claude Code 2.1.291 today.

It is mainly a stability release:

• Fixes a 2.1.290 regression where cloud sessions could lose answers to permission prompts.
• Fixes a 2.1.288 regression where the last session messages could be lost when quitting.

Official source: https://github.com/anthropics/claude-code/releases/tag/v2.1.291

2. Chrome 155 Starts Stable Rollout

Date: October 6, 2026 — Stage: Stable rollout

Chrome 155 begins its Stable rollout today. For extension developers, an important change concerns chrome.debugger in enterprise-managed browsers.

The new restriction matters when administrators configure policies such as runtime_blocked_hosts, DisableScreenshots, or DLP rules. Unmanaged browsers and managed environments without those policies are not affected by this specific change.

Official source: https://developer.chrome.com/blog/debugger-enterprise-policy-restrictions

3. New Gemini CLI Nightly

Version: v0.64.0-nightly.20261006.gfb972b2f8 — Stage: Nightly / Pre-release

Google published a new Gemini CLI nightly build today. It is not Stable. Official documentation describes nightly releases as daily builds that may still have pending validation.

Stable:

npm install -g @google/gemini-cli@latest

Nightly:

npm install -g @google/gemini-cli@nightly

Official source: https://github.com/google-gemini/gemini-cli/releases

4. Fresh Security Advisories — October 6

GitHub lists several newly published advisories dated October 6:

• CVE-2026-21589 — Critical — affecting Atlassian products including Bitbucket Data Center, Confluence Data Center and Jira.
• CVE-2026-91107 — Critical — openSIS Classic 9.3.
• CVE-2026-0461 — High — insufficient boundary validation in AMD Zynq UltraScale+ USB boot mode.
• CVE-2026-105750 — Moderate — enable_local_fetch issue in Docling.
• CVE-2026-105753 — Moderate — mirrored multimodal IPC cache issue in vLLM.

Yesterday's npm advisories, including simple-git and vm2, are deliberately not presented as new October 6 publications.

Primary source: https://github.com/advisories?query=sort%3Aupdated-desc

5. JavaScript / Node.js Status

Node.js

No new Stable/Current release dated October 6 was found. Node.js 26.10.0 is from September 22 and is intentionally not repeated.

Deno

No new Stable Deno release was found today.

Bun

No fresh Bun release meeting today's criteria was found.

TypeScript / ECMAScript

No fresh official TypeScript or TC39 announcement meeting today's criteria was found.

6. WebKit

WebKit has new builds dated October 6, but they are nightly/build artifacts, not a Stable product release.

Source: https://webkit.org/build-archives/

FAQ

Is Claude Code 2.1.291 a major feature release?

No. It focuses on stability and regression fixes.

Did Chrome 155 release today?

Its Stable rollout begins today; rollout timing can vary by user and managed fleet.

Is Gemini CLI stable today?

No. Today's build is Nightly/Pre-release.

Did Node.js release today?

No qualifying October 6 release was found.

Are all today's advisories JavaScript-related?

No. The advisory feed covers multiple ecosystems.

Three Priority Actions

1. Update Claude Code to 2.1.291 if you use it.
2. If you build enterprise extensions, test Chrome 155 and chrome.debugger policies.
3. Audit Node.js dependencies while keeping October 5 and October 6 advisories separate.

Primary Sources

• https://github.com/anthropics/claude-code/releases/tag/v2.1.291
• https://developer.chrome.com/blog/debugger-enterprise-policy-restrictions
• https://github.com/google-gemini/gemini-cli/releases
• https://github.com/advisories?query=sort%3Aupdated-desc
• https://nodejs.org/en/blog/release/
• https://deno.com/blog
• https://webkit.org/build-archives/